Home / 7,913.72-10,921.10-4,377.06

Finding the Fourth Proportional to 7,913.72, 10,921.10 and 4,377.06

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Solution

The fourth proportional to 7,913.72, 10,921.10 and 4,377.06 is: 6,040.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.72 : 10,921.10 = 4,377.06 : x
  2. Step 2: Convert to fraction form
    7,913.72/10,921.10 = 4,377.06/x
  3. Step 3: Cross multiply
    7,913.72x = 10,921.10 × 4,377.06
  4. Step 4: Simplify right side
    7,913.72x = 47,802,288.08
  5. Step 5: Solve for x
    x = 47,802,288.08/7,913.72
  6. Step 6: Final answer
    x = 6,040.43

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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.