Home / 4,778.80-7,165.63-1,490.56

Finding the Fourth Proportional to 4,778.80, 7,165.63 and 1,490.56

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Solution

The fourth proportional to 4,778.80, 7,165.63 and 1,490.56 is: 2,235.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.80 : 7,165.63 = 1,490.56 : x
  2. Step 2: Convert to fraction form
    4,778.80/7,165.63 = 1,490.56/x
  3. Step 3: Cross multiply
    4,778.80x = 7,165.63 × 1,490.56
  4. Step 4: Simplify right side
    4,778.80x = 10,680,801.45
  5. Step 5: Solve for x
    x = 10,680,801.45/4,778.80
  6. Step 6: Final answer
    x = 2,235.04

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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.