Home / 9,319.14-12,861.57-5,782.88

Finding the Fourth Proportional to 9,319.14, 12,861.57 and 5,782.88

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Solution

The fourth proportional to 9,319.14, 12,861.57 and 5,782.88 is: 7,981.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.14 : 12,861.57 = 5,782.88 : x
  2. Step 2: Convert to fraction form
    9,319.14/12,861.57 = 5,782.88/x
  3. Step 3: Cross multiply
    9,319.14x = 12,861.57 × 5,782.88
  4. Step 4: Simplify right side
    9,319.14x = 74,376,851.61
  5. Step 5: Solve for x
    x = 74,376,851.61/9,319.14
  6. Step 6: Final answer
    x = 7,981.09

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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.