Home / 1,532.40-2,296.20-1,287.60

Finding the Fourth Proportional to 1,532.40, 2,296.20 and 1,287.60

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Solution

The fourth proportional to 1,532.40, 2,296.20 and 1,287.60 is: 1,929.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,532.40 : 2,296.20 = 1,287.60 : x
  2. Step 2: Convert to fraction form
    1,532.40/2,296.20 = 1,287.60/x
  3. Step 3: Cross multiply
    1,532.40x = 2,296.20 × 1,287.60
  4. Step 4: Simplify right side
    1,532.40x = 2,956,587.12
  5. Step 5: Solve for x
    x = 2,956,587.12/1,532.40
  6. Step 6: Final answer
    x = 1,929.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.