Home / 5,377.17-7,420.25-2,987.31

Finding the Fourth Proportional to 5,377.17, 7,420.25 and 2,987.31

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Solution

The fourth proportional to 5,377.17, 7,420.25 and 2,987.31 is: 4,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.17 : 7,420.25 = 2,987.31 : x
  2. Step 2: Convert to fraction form
    5,377.17/7,420.25 = 2,987.31/x
  3. Step 3: Cross multiply
    5,377.17x = 7,420.25 × 2,987.31
  4. Step 4: Simplify right side
    5,377.17x = 22,166,561.07
  5. Step 5: Solve for x
    x = 22,166,561.07/5,377.17
  6. Step 6: Final answer
    x = 4,122.35

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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.