Home / 3,454.04-5,180.36-988.40

Finding the Fourth Proportional to 3,454.04, 5,180.36 and 988.40

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Solution

The fourth proportional to 3,454.04, 5,180.36 and 988.40 is: 1,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,454.04 : 5,180.36 = 988.40 : x
  2. Step 2: Convert to fraction form
    3,454.04/5,180.36 = 988.40/x
  3. Step 3: Cross multiply
    3,454.04x = 5,180.36 × 988.40
  4. Step 4: Simplify right side
    3,454.04x = 5,120,275.83
  5. Step 5: Solve for x
    x = 5,120,275.83/3,454.04
  6. Step 6: Final answer
    x = 1,482.40

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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.