Home / 4,125.20-6,187.80-1,047.20

Finding the Fourth Proportional to 4,125.20, 6,187.80 and 1,047.20

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Solution

The fourth proportional to 4,125.20, 6,187.80 and 1,047.20 is: 1,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,125.20 : 6,187.80 = 1,047.20 : x
  2. Step 2: Convert to fraction form
    4,125.20/6,187.80 = 1,047.20/x
  3. Step 3: Cross multiply
    4,125.20x = 6,187.80 × 1,047.20
  4. Step 4: Simplify right side
    4,125.20x = 6,479,864.16
  5. Step 5: Solve for x
    x = 6,479,864.16/4,125.20
  6. Step 6: Final answer
    x = 1,570.80

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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.