Home / 2,947.92-4,418.64-1,386.69

Finding the Fourth Proportional to 2,947.92, 4,418.64 and 1,386.69

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Solution

The fourth proportional to 2,947.92, 4,418.64 and 1,386.69 is: 2,078.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.92 : 4,418.64 = 1,386.69 : x
  2. Step 2: Convert to fraction form
    2,947.92/4,418.64 = 1,386.69/x
  3. Step 3: Cross multiply
    2,947.92x = 4,418.64 × 1,386.69
  4. Step 4: Simplify right side
    2,947.92x = 6,127,283.90
  5. Step 5: Solve for x
    x = 6,127,283.90/2,947.92
  6. Step 6: Final answer
    x = 2,078.51

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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.