Home / 5,130.32-7,079.30-2,892.14

Finding the Fourth Proportional to 5,130.32, 7,079.30 and 2,892.14

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Solution

The fourth proportional to 5,130.32, 7,079.30 and 2,892.14 is: 3,990.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.32 : 7,079.30 = 2,892.14 : x
  2. Step 2: Convert to fraction form
    5,130.32/7,079.30 = 2,892.14/x
  3. Step 3: Cross multiply
    5,130.32x = 7,079.30 × 2,892.14
  4. Step 4: Simplify right side
    5,130.32x = 20,474,326.70
  5. Step 5: Solve for x
    x = 20,474,326.70/5,130.32
  6. Step 6: Final answer
    x = 3,990.85

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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.