Home / 5,130.56-7,080.35-2,892.53

Finding the Fourth Proportional to 5,130.56, 7,080.35 and 2,892.53

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Solution

The fourth proportional to 5,130.56, 7,080.35 and 2,892.53 is: 3,991.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.56 : 7,080.35 = 2,892.53 : x
  2. Step 2: Convert to fraction form
    5,130.56/7,080.35 = 2,892.53/x
  3. Step 3: Cross multiply
    5,130.56x = 7,080.35 × 2,892.53
  4. Step 4: Simplify right side
    5,130.56x = 20,480,124.79
  5. Step 5: Solve for x
    x = 20,480,124.79/5,130.56
  6. Step 6: Final answer
    x = 3,991.79

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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.