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Finding the Fourth Proportional to 6,170.40, 8,929.80 and 6,170.40

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Solution

The fourth proportional to 6,170.40, 8,929.80 and 6,170.40 is: 8,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,170.40 : 8,929.80 = 6,170.40 : x
  2. Step 2: Convert to fraction form
    6,170.40/8,929.80 = 6,170.40/x
  3. Step 3: Cross multiply
    6,170.40x = 8,929.80 × 6,170.40
  4. Step 4: Simplify right side
    6,170.40x = 55,100,437.92
  5. Step 5: Solve for x
    x = 55,100,437.92/6,170.40
  6. Step 6: Final answer
    x = 8,929.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.