Home / 7,090.80-9,781.56-4,295.76

Finding the Fourth Proportional to 7,090.80, 9,781.56 and 4,295.76

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Solution

The fourth proportional to 7,090.80, 9,781.56 and 4,295.76 is: 5,925.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.80 : 9,781.56 = 4,295.76 : x
  2. Step 2: Convert to fraction form
    7,090.80/9,781.56 = 4,295.76/x
  3. Step 3: Cross multiply
    7,090.80x = 9,781.56 × 4,295.76
  4. Step 4: Simplify right side
    7,090.80x = 42,019,234.19
  5. Step 5: Solve for x
    x = 42,019,234.19/7,090.80
  6. Step 6: Final answer
    x = 5,925.88

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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.