Home / 5,390.06-7,437.15-3,151.49

Finding the Fourth Proportional to 5,390.06, 7,437.15 and 3,151.49

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Solution

The fourth proportional to 5,390.06, 7,437.15 and 3,151.49 is: 4,348.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.06 : 7,437.15 = 3,151.49 : x
  2. Step 2: Convert to fraction form
    5,390.06/7,437.15 = 3,151.49/x
  3. Step 3: Cross multiply
    5,390.06x = 7,437.15 × 3,151.49
  4. Step 4: Simplify right side
    5,390.06x = 23,438,066.67
  5. Step 5: Solve for x
    x = 23,438,066.67/5,390.06
  6. Step 6: Final answer
    x = 4,348.39

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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.