Home / 9,320.80-13,982.40-4,643.20

Finding the Fourth Proportional to 9,320.80, 13,982.40 and 4,643.20

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Solution

The fourth proportional to 9,320.80, 13,982.40 and 4,643.20 is: 6,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,320.80 : 13,982.40 = 4,643.20 : x
  2. Step 2: Convert to fraction form
    9,320.80/13,982.40 = 4,643.20/x
  3. Step 3: Cross multiply
    9,320.80x = 13,982.40 × 4,643.20
  4. Step 4: Simplify right side
    9,320.80x = 64,923,079.68
  5. Step 5: Solve for x
    x = 64,923,079.68/9,320.80
  6. Step 6: Final answer
    x = 6,965.40

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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.