Home / 9,319.92-12,861.20-5,127.60

Finding the Fourth Proportional to 9,319.92, 12,861.20 and 5,127.60

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Solution

The fourth proportional to 9,319.92, 12,861.20 and 5,127.60 is: 7,075.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.92 : 12,861.20 = 5,127.60 : x
  2. Step 2: Convert to fraction form
    9,319.92/12,861.20 = 5,127.60/x
  3. Step 3: Cross multiply
    9,319.92x = 12,861.20 × 5,127.60
  4. Step 4: Simplify right side
    9,319.92x = 65,947,089.12
  5. Step 5: Solve for x
    x = 65,947,089.12/9,319.92
  6. Step 6: Final answer
    x = 7,075.93

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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.