Home / 7,209.90-9,948.87-5,721.53

Finding the Fourth Proportional to 7,209.90, 9,948.87 and 5,721.53

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Solution

The fourth proportional to 7,209.90, 9,948.87 and 5,721.53 is: 7,895.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.90 : 9,948.87 = 5,721.53 : x
  2. Step 2: Convert to fraction form
    7,209.90/9,948.87 = 5,721.53/x
  3. Step 3: Cross multiply
    7,209.90x = 9,948.87 × 5,721.53
  4. Step 4: Simplify right side
    7,209.90x = 56,922,708.43
  5. Step 5: Solve for x
    x = 56,922,708.43/7,209.90
  6. Step 6: Final answer
    x = 7,895.08

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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.