Home / 1,535.03-2,118.35-836.45

Finding the Fourth Proportional to 1,535.03, 2,118.35 and 836.45

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Solution

The fourth proportional to 1,535.03, 2,118.35 and 836.45 is: 1,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.03 : 2,118.35 = 836.45 : x
  2. Step 2: Convert to fraction form
    1,535.03/2,118.35 = 836.45/x
  3. Step 3: Cross multiply
    1,535.03x = 2,118.35 × 836.45
  4. Step 4: Simplify right side
    1,535.03x = 1,771,889.68
  5. Step 5: Solve for x
    x = 1,771,889.68/1,535.03
  6. Step 6: Final answer
    x = 1,154.30

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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.