Home / 5,178.30-7,767.45-4,643.70

Finding the Fourth Proportional to 5,178.30, 7,767.45 and 4,643.70

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Solution

The fourth proportional to 5,178.30, 7,767.45 and 4,643.70 is: 6,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.30 : 7,767.45 = 4,643.70 : x
  2. Step 2: Convert to fraction form
    5,178.30/7,767.45 = 4,643.70/x
  3. Step 3: Cross multiply
    5,178.30x = 7,767.45 × 4,643.70
  4. Step 4: Simplify right side
    5,178.30x = 36,069,707.57
  5. Step 5: Solve for x
    x = 36,069,707.57/5,178.30
  6. Step 6: Final answer
    x = 6,965.55

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1.5x scale

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.