Home / 1,535.18-2,118.51-836.55

Finding the Fourth Proportional to 1,535.18, 2,118.51 and 836.55

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Solution

The fourth proportional to 1,535.18, 2,118.51 and 836.55 is: 1,154.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.18 : 2,118.51 = 836.55 : x
  2. Step 2: Convert to fraction form
    1,535.18/2,118.51 = 836.55/x
  3. Step 3: Cross multiply
    1,535.18x = 2,118.51 × 836.55
  4. Step 4: Simplify right side
    1,535.18x = 1,772,239.54
  5. Step 5: Solve for x
    x = 1,772,239.54/1,535.18
  6. Step 6: Final answer
    x = 1,154.42

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Double scale
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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.