Home / 3,155.72-4,699.92-2,953.20

Finding the Fourth Proportional to 3,155.72, 4,699.92 and 2,953.20

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Solution

The fourth proportional to 3,155.72, 4,699.92 and 2,953.20 is: 4,398.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.72 : 4,699.92 = 2,953.20 : x
  2. Step 2: Convert to fraction form
    3,155.72/4,699.92 = 2,953.20/x
  3. Step 3: Cross multiply
    3,155.72x = 4,699.92 × 2,953.20
  4. Step 4: Simplify right side
    3,155.72x = 13,879,803.74
  5. Step 5: Solve for x
    x = 13,879,803.74/3,155.72
  6. Step 6: Final answer
    x = 4,398.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.