Home / 7,331.28-10,118.52-4,187.28

Finding the Fourth Proportional to 7,331.28, 10,118.52 and 4,187.28

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Solution

The fourth proportional to 7,331.28, 10,118.52 and 4,187.28 is: 5,779.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,331.28 : 10,118.52 = 4,187.28 : x
  2. Step 2: Convert to fraction form
    7,331.28/10,118.52 = 4,187.28/x
  3. Step 3: Cross multiply
    7,331.28x = 10,118.52 × 4,187.28
  4. Step 4: Simplify right side
    7,331.28x = 42,369,076.43
  5. Step 5: Solve for x
    x = 42,369,076.43/7,331.28
  6. Step 6: Final answer
    x = 5,779.22

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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.