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Finding the Fourth Proportional to 2,921.40, 4,024.47 and 2,500.40

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Solution

The fourth proportional to 2,921.40, 4,024.47 and 2,500.40 is: 3,444.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.40 : 4,024.47 = 2,500.40 : x
  2. Step 2: Convert to fraction form
    2,921.40/4,024.47 = 2,500.40/x
  3. Step 3: Cross multiply
    2,921.40x = 4,024.47 × 2,500.40
  4. Step 4: Simplify right side
    2,921.40x = 10,062,784.79
  5. Step 5: Solve for x
    x = 10,062,784.79/2,921.40
  6. Step 6: Final answer
    x = 3,444.51

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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.