Home / 4,155.18-5,731.86-2,661.40

Finding the Fourth Proportional to 4,155.18, 5,731.86 and 2,661.40

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Solution

The fourth proportional to 4,155.18, 5,731.86 and 2,661.40 is: 3,671.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,155.18 : 5,731.86 = 2,661.40 : x
  2. Step 2: Convert to fraction form
    4,155.18/5,731.86 = 2,661.40/x
  3. Step 3: Cross multiply
    4,155.18x = 5,731.86 × 2,661.40
  4. Step 4: Simplify right side
    4,155.18x = 15,254,772.20
  5. Step 5: Solve for x
    x = 15,254,772.20/4,155.18
  6. Step 6: Final answer
    x = 3,671.27

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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.