Home / 7,215.23-9,957.17-3,985.04

Finding the Fourth Proportional to 7,215.23, 9,957.17 and 3,985.04

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Solution

The fourth proportional to 7,215.23, 9,957.17 and 3,985.04 is: 5,499.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.23 : 9,957.17 = 3,985.04 : x
  2. Step 2: Convert to fraction form
    7,215.23/9,957.17 = 3,985.04/x
  3. Step 3: Cross multiply
    7,215.23x = 9,957.17 × 3,985.04
  4. Step 4: Simplify right side
    7,215.23x = 39,679,720.74
  5. Step 5: Solve for x
    x = 39,679,720.74/7,215.23
  6. Step 6: Final answer
    x = 5,499.44

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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.