Home / 5,398.60-7,450.08-3,130.39

Finding the Fourth Proportional to 5,398.60, 7,450.08 and 3,130.39

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Solution

The fourth proportional to 5,398.60, 7,450.08 and 3,130.39 is: 4,319.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,398.60 : 7,450.08 = 3,130.39 : x
  2. Step 2: Convert to fraction form
    5,398.60/7,450.08 = 3,130.39/x
  3. Step 3: Cross multiply
    5,398.60x = 7,450.08 × 3,130.39
  4. Step 4: Simplify right side
    5,398.60x = 23,321,655.93
  5. Step 5: Solve for x
    x = 23,321,655.93/5,398.60
  6. Step 6: Final answer
    x = 4,319.95

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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.