Home / 7,960.32-10,989.12-5,455.68

Finding the Fourth Proportional to 7,960.32, 10,989.12 and 5,455.68

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Solution

The fourth proportional to 7,960.32, 10,989.12 and 5,455.68 is: 7,531.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,960.32 : 10,989.12 = 5,455.68 : x
  2. Step 2: Convert to fraction form
    7,960.32/10,989.12 = 5,455.68/x
  3. Step 3: Cross multiply
    7,960.32x = 10,989.12 × 5,455.68
  4. Step 4: Simplify right side
    7,960.32x = 59,953,122.20
  5. Step 5: Solve for x
    x = 59,953,122.20/7,960.32
  6. Step 6: Final answer
    x = 7,531.50

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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.