Home / 7,117.40-9,820.32-4,283.80

Finding the Fourth Proportional to 7,117.40, 9,820.32 and 4,283.80

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Solution

The fourth proportional to 7,117.40, 9,820.32 and 4,283.80 is: 5,910.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.40 : 9,820.32 = 4,283.80 : x
  2. Step 2: Convert to fraction form
    7,117.40/9,820.32 = 4,283.80/x
  3. Step 3: Cross multiply
    7,117.40x = 9,820.32 × 4,283.80
  4. Step 4: Simplify right side
    7,117.40x = 42,068,286.82
  5. Step 5: Solve for x
    x = 42,068,286.82/7,117.40
  6. Step 6: Final answer
    x = 5,910.63

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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.