Home / 2,656.71-3,979.58-1,557.77

Finding the Fourth Proportional to 2,656.71, 3,979.58 and 1,557.77

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Solution

The fourth proportional to 2,656.71, 3,979.58 and 1,557.77 is: 2,333.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.71 : 3,979.58 = 1,557.77 : x
  2. Step 2: Convert to fraction form
    2,656.71/3,979.58 = 1,557.77/x
  3. Step 3: Cross multiply
    2,656.71x = 3,979.58 × 1,557.77
  4. Step 4: Simplify right side
    2,656.71x = 6,199,242.65
  5. Step 5: Solve for x
    x = 6,199,242.65/2,656.71
  6. Step 6: Final answer
    x = 2,333.43

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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.