Home / 1,856.16-2,557.95-1,331.28

Finding the Fourth Proportional to 1,856.16, 2,557.95 and 1,331.28

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Solution

The fourth proportional to 1,856.16, 2,557.95 and 1,331.28 is: 1,834.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.16 : 2,557.95 = 1,331.28 : x
  2. Step 2: Convert to fraction form
    1,856.16/2,557.95 = 1,331.28/x
  3. Step 3: Cross multiply
    1,856.16x = 2,557.95 × 1,331.28
  4. Step 4: Simplify right side
    1,856.16x = 3,405,347.68
  5. Step 5: Solve for x
    x = 3,405,347.68/1,856.16
  6. Step 6: Final answer
    x = 1,834.62

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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.