Home / 2,775.40-4,143.07-2,572.72

Finding the Fourth Proportional to 2,775.40, 4,143.07 and 2,572.72

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Solution

The fourth proportional to 2,775.40, 4,143.07 and 2,572.72 is: 3,840.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.40 : 4,143.07 = 2,572.72 : x
  2. Step 2: Convert to fraction form
    2,775.40/4,143.07 = 2,572.72/x
  3. Step 3: Cross multiply
    2,775.40x = 4,143.07 × 2,572.72
  4. Step 4: Simplify right side
    2,775.40x = 10,658,959.05
  5. Step 5: Solve for x
    x = 10,658,959.05/2,775.40
  6. Step 6: Final answer
    x = 3,840.51

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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.