Home / 6,981.60-9,630.32-4,988.71

Finding the Fourth Proportional to 6,981.60, 9,630.32 and 4,988.71

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Solution

The fourth proportional to 6,981.60, 9,630.32 and 4,988.71 is: 6,881.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.60 : 9,630.32 = 4,988.71 : x
  2. Step 2: Convert to fraction form
    6,981.60/9,630.32 = 4,988.71/x
  3. Step 3: Cross multiply
    6,981.60x = 9,630.32 × 4,988.71
  4. Step 4: Simplify right side
    6,981.60x = 48,042,873.69
  5. Step 5: Solve for x
    x = 48,042,873.69/6,981.60
  6. Step 6: Final answer
    x = 6,881.36

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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.