Home / 7,110.75-9,808.90-4,989.47

Finding the Fourth Proportional to 7,110.75, 9,808.90 and 4,989.47

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Solution

The fourth proportional to 7,110.75, 9,808.90 and 4,989.47 is: 6,882.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.75 : 9,808.90 = 4,989.47 : x
  2. Step 2: Convert to fraction form
    7,110.75/9,808.90 = 4,989.47/x
  3. Step 3: Cross multiply
    7,110.75x = 9,808.90 × 4,989.47
  4. Step 4: Simplify right side
    7,110.75x = 48,941,150.76
  5. Step 5: Solve for x
    x = 48,941,150.76/7,110.75
  6. Step 6: Final answer
    x = 6,882.70

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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.