Home / 7,851.64-11,777.82-5,553.40

Finding the Fourth Proportional to 7,851.64, 11,777.82 and 5,553.40

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Solution

The fourth proportional to 7,851.64, 11,777.82 and 5,553.40 is: 8,330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.64 : 11,777.82 = 5,553.40 : x
  2. Step 2: Convert to fraction form
    7,851.64/11,777.82 = 5,553.40/x
  3. Step 3: Cross multiply
    7,851.64x = 11,777.82 × 5,553.40
  4. Step 4: Simplify right side
    7,851.64x = 65,406,945.59
  5. Step 5: Solve for x
    x = 65,406,945.59/7,851.64
  6. Step 6: Final answer
    x = 8,330.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.