Home / 5,130.60-7,080.10-2,892.50

Finding the Fourth Proportional to 5,130.60, 7,080.10 and 2,892.50

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Solution

The fourth proportional to 5,130.60, 7,080.10 and 2,892.50 is: 3,991.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.60 : 7,080.10 = 2,892.50 : x
  2. Step 2: Convert to fraction form
    5,130.60/7,080.10 = 2,892.50/x
  3. Step 3: Cross multiply
    5,130.60x = 7,080.10 × 2,892.50
  4. Step 4: Simplify right side
    5,130.60x = 20,479,189.25
  5. Step 5: Solve for x
    x = 20,479,189.25/5,130.60
  6. Step 6: Final answer
    x = 3,991.58

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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.