Home / 10,475.36-15,715.25-3,079.20

Finding the Fourth Proportional to 10,475.36, 15,715.25 and 3,079.20

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Solution

The fourth proportional to 10,475.36, 15,715.25 and 3,079.20 is: 4,619.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,475.36 : 15,715.25 = 3,079.20 : x
  2. Step 2: Convert to fraction form
    10,475.36/15,715.25 = 3,079.20/x
  3. Step 3: Cross multiply
    10,475.36x = 15,715.25 × 3,079.20
  4. Step 4: Simplify right side
    10,475.36x = 48,390,382.40
  5. Step 5: Solve for x
    x = 48,390,382.40/10,475.36
  6. Step 6: Final answer
    x = 4,619.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.