Home / 5,377.47-7,420.16-2,987.27

Finding the Fourth Proportional to 5,377.47, 7,420.16 and 2,987.27

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Solution

The fourth proportional to 5,377.47, 7,420.16 and 2,987.27 is: 4,122.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.47 : 7,420.16 = 2,987.27 : x
  2. Step 2: Convert to fraction form
    5,377.47/7,420.16 = 2,987.27/x
  3. Step 3: Cross multiply
    5,377.47x = 7,420.16 × 2,987.27
  4. Step 4: Simplify right side
    5,377.47x = 22,165,969.33
  5. Step 5: Solve for x
    x = 22,165,969.33/5,377.47
  6. Step 6: Final answer
    x = 4,122.01

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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.