Home / 6,639.30-9,159.16-4,282.20

Finding the Fourth Proportional to 6,639.30, 9,159.16 and 4,282.20

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Solution

The fourth proportional to 6,639.30, 9,159.16 and 4,282.20 is: 5,907.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.30 : 9,159.16 = 4,282.20 : x
  2. Step 2: Convert to fraction form
    6,639.30/9,159.16 = 4,282.20/x
  3. Step 3: Cross multiply
    6,639.30x = 9,159.16 × 4,282.20
  4. Step 4: Simplify right side
    6,639.30x = 39,221,354.95
  5. Step 5: Solve for x
    x = 39,221,354.95/6,639.30
  6. Step 6: Final answer
    x = 5,907.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.