Home / 7,132.20-9,842.46-3,988.32

Finding the Fourth Proportional to 7,132.20, 9,842.46 and 3,988.32

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Solution

The fourth proportional to 7,132.20, 9,842.46 and 3,988.32 is: 5,503.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,132.20 : 9,842.46 = 3,988.32 : x
  2. Step 2: Convert to fraction form
    7,132.20/9,842.46 = 3,988.32/x
  3. Step 3: Cross multiply
    7,132.20x = 9,842.46 × 3,988.32
  4. Step 4: Simplify right side
    7,132.20x = 39,254,880.07
  5. Step 5: Solve for x
    x = 39,254,880.07/7,132.20
  6. Step 6: Final answer
    x = 5,503.90

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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.