Home / 9,319.32-12,859.20-5,339.88

Finding the Fourth Proportional to 9,319.32, 12,859.20 and 5,339.88

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Solution

The fourth proportional to 9,319.32, 12,859.20 and 5,339.88 is: 7,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.32 : 12,859.20 = 5,339.88 : x
  2. Step 2: Convert to fraction form
    9,319.32/12,859.20 = 5,339.88/x
  3. Step 3: Cross multiply
    9,319.32x = 12,859.20 × 5,339.88
  4. Step 4: Simplify right side
    9,319.32x = 68,666,584.90
  5. Step 5: Solve for x
    x = 68,666,584.90/9,319.32
  6. Step 6: Final answer
    x = 7,368.20

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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.