Home / 5,130.92-7,080.54-2,892.76

Finding the Fourth Proportional to 5,130.92, 7,080.54 and 2,892.76

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Solution

The fourth proportional to 5,130.92, 7,080.54 and 2,892.76 is: 3,991.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.92 : 7,080.54 = 2,892.76 : x
  2. Step 2: Convert to fraction form
    5,130.92/7,080.54 = 2,892.76/x
  3. Step 3: Cross multiply
    5,130.92x = 7,080.54 × 2,892.76
  4. Step 4: Simplify right side
    5,130.92x = 20,482,302.89
  5. Step 5: Solve for x
    x = 20,482,302.89/5,130.92
  6. Step 6: Final answer
    x = 3,991.94

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Half scale
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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.