Home / 7,948.60-10,964.16-5,115.04

Finding the Fourth Proportional to 7,948.60, 10,964.16 and 5,115.04

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Solution

The fourth proportional to 7,948.60, 10,964.16 and 5,115.04 is: 7,055.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,948.60 : 10,964.16 = 5,115.04 : x
  2. Step 2: Convert to fraction form
    7,948.60/10,964.16 = 5,115.04/x
  3. Step 3: Cross multiply
    7,948.60x = 10,964.16 × 5,115.04
  4. Step 4: Simplify right side
    7,948.60x = 56,082,116.97
  5. Step 5: Solve for x
    x = 56,082,116.97/7,948.60
  6. Step 6: Final answer
    x = 7,055.60

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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.