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Finding the Fourth Proportional to 8,980.90, 13,470.84 and 2,740.84

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Solution

The fourth proportional to 8,980.90, 13,470.84 and 2,740.84 is: 4,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.90 : 13,470.84 = 2,740.84 : x
  2. Step 2: Convert to fraction form
    8,980.90/13,470.84 = 2,740.84/x
  3. Step 3: Cross multiply
    8,980.90x = 13,470.84 × 2,740.84
  4. Step 4: Simplify right side
    8,980.90x = 36,921,417.11
  5. Step 5: Solve for x
    x = 36,921,417.11/8,980.90
  6. Step 6: Final answer
    x = 4,111.10

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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.