Home / 7,921.71-10,931.83-4,384.85

Finding the Fourth Proportional to 7,921.71, 10,931.83 and 4,384.85

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Solution

The fourth proportional to 7,921.71, 10,931.83 and 4,384.85 is: 6,051.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.71 : 10,931.83 = 4,384.85 : x
  2. Step 2: Convert to fraction form
    7,921.71/10,931.83 = 4,384.85/x
  3. Step 3: Cross multiply
    7,921.71x = 10,931.83 × 4,384.85
  4. Step 4: Simplify right side
    7,921.71x = 47,934,369.15
  5. Step 5: Solve for x
    x = 47,934,369.15/7,921.71
  6. Step 6: Final answer
    x = 6,051.01

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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.