Home / 7,921.38-10,931.36-4,384.59

Finding the Fourth Proportional to 7,921.38, 10,931.36 and 4,384.59

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Solution

The fourth proportional to 7,921.38, 10,931.36 and 4,384.59 is: 6,050.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.38 : 10,931.36 = 4,384.59 : x
  2. Step 2: Convert to fraction form
    7,921.38/10,931.36 = 4,384.59/x
  3. Step 3: Cross multiply
    7,921.38x = 10,931.36 × 4,384.59
  4. Step 4: Simplify right side
    7,921.38x = 47,929,531.74
  5. Step 5: Solve for x
    x = 47,929,531.74/7,921.38
  6. Step 6: Final answer
    x = 6,050.65

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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.