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Finding the Fourth Proportional to 5,008.88, 7,510.80 and 2,086.40

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Solution

The fourth proportional to 5,008.88, 7,510.80 and 2,086.40 is: 3,128.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,008.88 : 7,510.80 = 2,086.40 : x
  2. Step 2: Convert to fraction form
    5,008.88/7,510.80 = 2,086.40/x
  3. Step 3: Cross multiply
    5,008.88x = 7,510.80 × 2,086.40
  4. Step 4: Simplify right side
    5,008.88x = 15,670,533.12
  5. Step 5: Solve for x
    x = 15,670,533.12/5,008.88
  6. Step 6: Final answer
    x = 3,128.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.