Home / 5,534.68-7,639.36-3,178.40

Finding the Fourth Proportional to 5,534.68, 7,639.36 and 3,178.40

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Solution

The fourth proportional to 5,534.68, 7,639.36 and 3,178.40 is: 4,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,534.68 : 7,639.36 = 3,178.40 : x
  2. Step 2: Convert to fraction form
    5,534.68/7,639.36 = 3,178.40/x
  3. Step 3: Cross multiply
    5,534.68x = 7,639.36 × 3,178.40
  4. Step 4: Simplify right side
    5,534.68x = 24,280,941.82
  5. Step 5: Solve for x
    x = 24,280,941.82/5,534.68
  6. Step 6: Final answer
    x = 4,387.05

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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.