Home / 4,931.76-7,399.95-2,158.08

Finding the Fourth Proportional to 4,931.76, 7,399.95 and 2,158.08

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Solution

The fourth proportional to 4,931.76, 7,399.95 and 2,158.08 is: 3,238.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,931.76 : 7,399.95 = 2,158.08 : x
  2. Step 2: Convert to fraction form
    4,931.76/7,399.95 = 2,158.08/x
  3. Step 3: Cross multiply
    4,931.76x = 7,399.95 × 2,158.08
  4. Step 4: Simplify right side
    4,931.76x = 15,969,636.31
  5. Step 5: Solve for x
    x = 15,969,636.31/4,931.76
  6. Step 6: Final answer
    x = 3,238.12

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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.