Home / 5,130.49-7,080.51-2,892.25

Finding the Fourth Proportional to 5,130.49, 7,080.51 and 2,892.25

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Solution

The fourth proportional to 5,130.49, 7,080.51 and 2,892.25 is: 3,991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.49 : 7,080.51 = 2,892.25 : x
  2. Step 2: Convert to fraction form
    5,130.49/7,080.51 = 2,892.25/x
  3. Step 3: Cross multiply
    5,130.49x = 7,080.51 × 2,892.25
  4. Step 4: Simplify right side
    5,130.49x = 20,478,605.05
  5. Step 5: Solve for x
    x = 20,478,605.05/5,130.49
  6. Step 6: Final answer
    x = 3,991.55

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Half scale
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Double 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.