Home / 2,991.16-4,128.92-2,569.83

Finding the Fourth Proportional to 2,991.16, 4,128.92 and 2,569.83

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Solution

The fourth proportional to 2,991.16, 4,128.92 and 2,569.83 is: 3,547.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.16 : 4,128.92 = 2,569.83 : x
  2. Step 2: Convert to fraction form
    2,991.16/4,128.92 = 2,569.83/x
  3. Step 3: Cross multiply
    2,991.16x = 4,128.92 × 2,569.83
  4. Step 4: Simplify right side
    2,991.16x = 10,610,622.48
  5. Step 5: Solve for x
    x = 10,610,622.48/2,991.16
  6. Step 6: Final answer
    x = 3,547.33

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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.