Home / 5,280.20-7,913.45-2,156.64

Finding the Fourth Proportional to 5,280.20, 7,913.45 and 2,156.64

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Solution

The fourth proportional to 5,280.20, 7,913.45 and 2,156.64 is: 3,232.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.20 : 7,913.45 = 2,156.64 : x
  2. Step 2: Convert to fraction form
    5,280.20/7,913.45 = 2,156.64/x
  3. Step 3: Cross multiply
    5,280.20x = 7,913.45 × 2,156.64
  4. Step 4: Simplify right side
    5,280.20x = 17,066,462.81
  5. Step 5: Solve for x
    x = 17,066,462.81/5,280.20
  6. Step 6: Final answer
    x = 3,232.16

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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.