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Finding the Fourth Proportional to 6,427.89, 8,862.89 and 5,009.99

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Solution

The fourth proportional to 6,427.89, 8,862.89 and 5,009.99 is: 6,907.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,427.89 : 8,862.89 = 5,009.99 : x
  2. Step 2: Convert to fraction form
    6,427.89/8,862.89 = 5,009.99/x
  3. Step 3: Cross multiply
    6,427.89x = 8,862.89 × 5,009.99
  4. Step 4: Simplify right side
    6,427.89x = 44,402,920.91
  5. Step 5: Solve for x
    x = 44,402,920.91/6,427.89
  6. Step 6: Final answer
    x = 6,907.85

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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.