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Finding the Fourth Proportional to 3,454.04, 5,179.53 and 988.29

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Solution

The fourth proportional to 3,454.04, 5,179.53 and 988.29 is: 1,482.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,454.04 : 5,179.53 = 988.29 : x
  2. Step 2: Convert to fraction form
    3,454.04/5,179.53 = 988.29/x
  3. Step 3: Cross multiply
    3,454.04x = 5,179.53 × 988.29
  4. Step 4: Simplify right side
    3,454.04x = 5,118,897.13
  5. Step 5: Solve for x
    x = 5,118,897.13/3,454.04
  6. Step 6: Final answer
    x = 1,482.00

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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.