Home / 4,748.15-7,121.95-1,285.13

Finding the Fourth Proportional to 4,748.15, 7,121.95 and 1,285.13

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Solution

The fourth proportional to 4,748.15, 7,121.95 and 1,285.13 is: 1,927.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,748.15 : 7,121.95 = 1,285.13 : x
  2. Step 2: Convert to fraction form
    4,748.15/7,121.95 = 1,285.13/x
  3. Step 3: Cross multiply
    4,748.15x = 7,121.95 × 1,285.13
  4. Step 4: Simplify right side
    4,748.15x = 9,152,592.78
  5. Step 5: Solve for x
    x = 9,152,592.78/4,748.15
  6. Step 6: Final answer
    x = 1,927.61

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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.