Home / 1,535.40-2,118.84-836.76

Finding the Fourth Proportional to 1,535.40, 2,118.84 and 836.76

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Solution

The fourth proportional to 1,535.40, 2,118.84 and 836.76 is: 1,154.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.40 : 2,118.84 = 836.76 : x
  2. Step 2: Convert to fraction form
    1,535.40/2,118.84 = 836.76/x
  3. Step 3: Cross multiply
    1,535.40x = 2,118.84 × 836.76
  4. Step 4: Simplify right side
    1,535.40x = 1,772,960.56
  5. Step 5: Solve for x
    x = 1,772,960.56/1,535.40
  6. Step 6: Final answer
    x = 1,154.72

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,536.40, 2,120.22 and 837.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.