Home / 8,810.40-12,149.28-6,156.84

Finding the Fourth Proportional to 8,810.40, 12,149.28 and 6,156.84

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Solution

The fourth proportional to 8,810.40, 12,149.28 and 6,156.84 is: 8,490.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,810.40 : 12,149.28 = 6,156.84 : x
  2. Step 2: Convert to fraction form
    8,810.40/12,149.28 = 6,156.84/x
  3. Step 3: Cross multiply
    8,810.40x = 12,149.28 × 6,156.84
  4. Step 4: Simplify right side
    8,810.40x = 74,801,173.08
  5. Step 5: Solve for x
    x = 74,801,173.08/8,810.40
  6. Step 6: Final answer
    x = 8,490.10

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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.