Home / 9,110.78-13,666.20-2,871.38

Finding the Fourth Proportional to 9,110.78, 13,666.20 and 2,871.38

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Solution

The fourth proportional to 9,110.78, 13,666.20 and 2,871.38 is: 4,307.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,110.78 : 13,666.20 = 2,871.38 : x
  2. Step 2: Convert to fraction form
    9,110.78/13,666.20 = 2,871.38/x
  3. Step 3: Cross multiply
    9,110.78x = 13,666.20 × 2,871.38
  4. Step 4: Simplify right side
    9,110.78x = 39,240,853.36
  5. Step 5: Solve for x
    x = 39,240,853.36/9,110.78
  6. Step 6: Final answer
    x = 4,307.08

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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.