Home / 10,045.92-15,070.56-3,120

Finding the Fourth Proportional to 10,045.92, 15,070.56 and 3,120

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Solution

The fourth proportional to 10,045.92, 15,070.56 and 3,120 is: 4,680.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,045.92 : 15,070.56 = 3,120 : x
  2. Step 2: Convert to fraction form
    10,045.92/15,070.56 = 3,120/x
  3. Step 3: Cross multiply
    10,045.92x = 15,070.56 × 3,120
  4. Step 4: Simplify right side
    10,045.92x = 47,020,147.20
  5. Step 5: Solve for x
    x = 47,020,147.20/10,045.92
  6. Step 6: Final answer
    x = 4,680.52

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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.