Home / 3,009.70-4,151.56-1,947.10

Finding the Fourth Proportional to 3,009.70, 4,151.56 and 1,947.10

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Solution

The fourth proportional to 3,009.70, 4,151.56 and 1,947.10 is: 2,685.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.70 : 4,151.56 = 1,947.10 : x
  2. Step 2: Convert to fraction form
    3,009.70/4,151.56 = 1,947.10/x
  3. Step 3: Cross multiply
    3,009.70x = 4,151.56 × 1,947.10
  4. Step 4: Simplify right side
    3,009.70x = 8,083,502.48
  5. Step 5: Solve for x
    x = 8,083,502.48/3,009.70
  6. Step 6: Final answer
    x = 2,685.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.