Home / 5,424.31-7,485.60-3,186.90

Finding the Fourth Proportional to 5,424.31, 7,485.60 and 3,186.90

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Solution

The fourth proportional to 5,424.31, 7,485.60 and 3,186.90 is: 4,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.31 : 7,485.60 = 3,186.90 : x
  2. Step 2: Convert to fraction form
    5,424.31/7,485.60 = 3,186.90/x
  3. Step 3: Cross multiply
    5,424.31x = 7,485.60 × 3,186.90
  4. Step 4: Simplify right side
    5,424.31x = 23,855,842.71
  5. Step 5: Solve for x
    x = 23,855,842.71/5,424.31
  6. Step 6: Final answer
    x = 4,397.95

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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.