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Finding the Fourth Proportional to 7,875.94, 10,867.21 and 5,987.02

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Solution

The fourth proportional to 7,875.94, 10,867.21 and 5,987.02 is: 8,260.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.94 : 10,867.21 = 5,987.02 : x
  2. Step 2: Convert to fraction form
    7,875.94/10,867.21 = 5,987.02/x
  3. Step 3: Cross multiply
    7,875.94x = 10,867.21 × 5,987.02
  4. Step 4: Simplify right side
    7,875.94x = 65,062,203.61
  5. Step 5: Solve for x
    x = 65,062,203.61/7,875.94
  6. Step 6: Final answer
    x = 8,260.88

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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.