Home / 4,320.04-6,480.12-1,687.72

Finding the Fourth Proportional to 4,320.04, 6,480.12 and 1,687.72

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Solution

The fourth proportional to 4,320.04, 6,480.12 and 1,687.72 is: 2,531.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,320.04 : 6,480.12 = 1,687.72 : x
  2. Step 2: Convert to fraction form
    4,320.04/6,480.12 = 1,687.72/x
  3. Step 3: Cross multiply
    4,320.04x = 6,480.12 × 1,687.72
  4. Step 4: Simplify right side
    4,320.04x = 10,936,628.13
  5. Step 5: Solve for x
    x = 10,936,628.13/4,320.04
  6. Step 6: Final answer
    x = 2,531.60

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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.