Home / 1,721.32-2,580.05-1,312.27

Finding the Fourth Proportional to 1,721.32, 2,580.05 and 1,312.27

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Solution

The fourth proportional to 1,721.32, 2,580.05 and 1,312.27 is: 1,966.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.32 : 2,580.05 = 1,312.27 : x
  2. Step 2: Convert to fraction form
    1,721.32/2,580.05 = 1,312.27/x
  3. Step 3: Cross multiply
    1,721.32x = 2,580.05 × 1,312.27
  4. Step 4: Simplify right side
    1,721.32x = 3,385,719.04
  5. Step 5: Solve for x
    x = 3,385,719.04/1,721.32
  6. Step 6: Final answer
    x = 1,966.93

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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.