Home / 1,947.42-2,681.40-1,520.94

Finding the Fourth Proportional to 1,947.42, 2,681.40 and 1,520.94

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Solution

The fourth proportional to 1,947.42, 2,681.40 and 1,520.94 is: 2,094.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.42 : 2,681.40 = 1,520.94 : x
  2. Step 2: Convert to fraction form
    1,947.42/2,681.40 = 1,520.94/x
  3. Step 3: Cross multiply
    1,947.42x = 2,681.40 × 1,520.94
  4. Step 4: Simplify right side
    1,947.42x = 4,078,248.52
  5. Step 5: Solve for x
    x = 4,078,248.52/1,947.42
  6. Step 6: Final answer
    x = 2,094.18

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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.