Home / 8,276.02-11,419.28-5,130.78

Finding the Fourth Proportional to 8,276.02, 11,419.28 and 5,130.78

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Solution

The fourth proportional to 8,276.02, 11,419.28 and 5,130.78 is: 7,079.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,276.02 : 11,419.28 = 5,130.78 : x
  2. Step 2: Convert to fraction form
    8,276.02/11,419.28 = 5,130.78/x
  3. Step 3: Cross multiply
    8,276.02x = 11,419.28 × 5,130.78
  4. Step 4: Simplify right side
    8,276.02x = 58,589,813.44
  5. Step 5: Solve for x
    x = 58,589,813.44/8,276.02
  6. Step 6: Final answer
    x = 7,079.47

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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.