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Finding the Fourth Proportional to 2,471.76, 3,411.36 and 1,395.25

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Solution

The fourth proportional to 2,471.76, 3,411.36 and 1,395.25 is: 1,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,471.76 : 3,411.36 = 1,395.25 : x
  2. Step 2: Convert to fraction form
    2,471.76/3,411.36 = 1,395.25/x
  3. Step 3: Cross multiply
    2,471.76x = 3,411.36 × 1,395.25
  4. Step 4: Simplify right side
    2,471.76x = 4,759,700.04
  5. Step 5: Solve for x
    x = 4,759,700.04/2,471.76
  6. Step 6: Final answer
    x = 1,925.63

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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.