Home / 9,400.44-12,943.02-7,981.32

Finding the Fourth Proportional to 9,400.44, 12,943.02 and 7,981.32

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Solution

The fourth proportional to 9,400.44, 12,943.02 and 7,981.32 is: 10,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,400.44 : 12,943.02 = 7,981.32 : x
  2. Step 2: Convert to fraction form
    9,400.44/12,943.02 = 7,981.32/x
  3. Step 3: Cross multiply
    9,400.44x = 12,943.02 × 7,981.32
  4. Step 4: Simplify right side
    9,400.44x = 103,302,384.39
  5. Step 5: Solve for x
    x = 103,302,384.39/9,400.44
  6. Step 6: Final answer
    x = 10,989.10

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Double scale
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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.