Home / 7,475.20-10,305.12-5,113.60

Finding the Fourth Proportional to 7,475.20, 10,305.12 and 5,113.60

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Solution

The fourth proportional to 7,475.20, 10,305.12 and 5,113.60 is: 7,049.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,475.20 : 10,305.12 = 5,113.60 : x
  2. Step 2: Convert to fraction form
    7,475.20/10,305.12 = 5,113.60/x
  3. Step 3: Cross multiply
    7,475.20x = 10,305.12 × 5,113.60
  4. Step 4: Simplify right side
    7,475.20x = 52,696,261.63
  5. Step 5: Solve for x
    x = 52,696,261.63/7,475.20
  6. Step 6: Final answer
    x = 7,049.48

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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.