Home / 5,390.09-7,437.21-3,151.53

Finding the Fourth Proportional to 5,390.09, 7,437.21 and 3,151.53

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Solution

The fourth proportional to 5,390.09, 7,437.21 and 3,151.53 is: 4,348.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.09 : 7,437.21 = 3,151.53 : x
  2. Step 2: Convert to fraction form
    5,390.09/7,437.21 = 3,151.53/x
  3. Step 3: Cross multiply
    5,390.09x = 7,437.21 × 3,151.53
  4. Step 4: Simplify right side
    5,390.09x = 23,438,574.67
  5. Step 5: Solve for x
    x = 23,438,574.67/5,390.09
  6. Step 6: Final answer
    x = 4,348.46

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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.