Home / 1,875.78-2,589.62-1,247.16

Finding the Fourth Proportional to 1,875.78, 2,589.62 and 1,247.16

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Solution

The fourth proportional to 1,875.78, 2,589.62 and 1,247.16 is: 1,721.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.78 : 2,589.62 = 1,247.16 : x
  2. Step 2: Convert to fraction form
    1,875.78/2,589.62 = 1,247.16/x
  3. Step 3: Cross multiply
    1,875.78x = 2,589.62 × 1,247.16
  4. Step 4: Simplify right side
    1,875.78x = 3,229,664.24
  5. Step 5: Solve for x
    x = 3,229,664.24/1,875.78
  6. Step 6: Final answer
    x = 1,721.77

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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.