Home / 1,938.48-2,908.62-1,577.40

Finding the Fourth Proportional to 1,938.48, 2,908.62 and 1,577.40

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Solution

The fourth proportional to 1,938.48, 2,908.62 and 1,577.40 is: 2,366.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.48 : 2,908.62 = 1,577.40 : x
  2. Step 2: Convert to fraction form
    1,938.48/2,908.62 = 1,577.40/x
  3. Step 3: Cross multiply
    1,938.48x = 2,908.62 × 1,577.40
  4. Step 4: Simplify right side
    1,938.48x = 4,588,057.19
  5. Step 5: Solve for x
    x = 4,588,057.19/1,938.48
  6. Step 6: Final answer
    x = 2,366.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.