Home / 1,642.40-2,265.36-1,435.04

Finding the Fourth Proportional to 1,642.40, 2,265.36 and 1,435.04

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Solution

The fourth proportional to 1,642.40, 2,265.36 and 1,435.04 is: 1,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.40 : 2,265.36 = 1,435.04 : x
  2. Step 2: Convert to fraction form
    1,642.40/2,265.36 = 1,435.04/x
  3. Step 3: Cross multiply
    1,642.40x = 2,265.36 × 1,435.04
  4. Step 4: Simplify right side
    1,642.40x = 3,250,882.21
  5. Step 5: Solve for x
    x = 3,250,882.21/1,642.40
  6. Step 6: Final answer
    x = 1,979.35

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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.