Home / 1,577.07-2,176.18-913.79

Finding the Fourth Proportional to 1,577.07, 2,176.18 and 913.79

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Solution

The fourth proportional to 1,577.07, 2,176.18 and 913.79 is: 1,260.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.07 : 2,176.18 = 913.79 : x
  2. Step 2: Convert to fraction form
    1,577.07/2,176.18 = 913.79/x
  3. Step 3: Cross multiply
    1,577.07x = 2,176.18 × 913.79
  4. Step 4: Simplify right side
    1,577.07x = 1,988,571.52
  5. Step 5: Solve for x
    x = 1,988,571.52/1,577.07
  6. Step 6: Final answer
    x = 1,260.93

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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.