Home / 1,647.16-2,471.19-607.78

Finding the Fourth Proportional to 1,647.16, 2,471.19 and 607.78

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Solution

The fourth proportional to 1,647.16, 2,471.19 and 607.78 is: 911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.16 : 2,471.19 = 607.78 : x
  2. Step 2: Convert to fraction form
    1,647.16/2,471.19 = 607.78/x
  3. Step 3: Cross multiply
    1,647.16x = 2,471.19 × 607.78
  4. Step 4: Simplify right side
    1,647.16x = 1,501,939.86
  5. Step 5: Solve for x
    x = 1,501,939.86/1,647.16
  6. Step 6: Final answer
    x = 911.84

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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.