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Finding the Fourth Proportional to 5,130.66, 7,079.63 and 2,892.63

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Solution

The fourth proportional to 5,130.66, 7,079.63 and 2,892.63 is: 3,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.66 : 7,079.63 = 2,892.63 : x
  2. Step 2: Convert to fraction form
    5,130.66/7,079.63 = 2,892.63/x
  3. Step 3: Cross multiply
    5,130.66x = 7,079.63 × 2,892.63
  4. Step 4: Simplify right side
    5,130.66x = 20,478,750.13
  5. Step 5: Solve for x
    x = 20,478,750.13/5,130.66
  6. Step 6: Final answer
    x = 3,991.45

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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.