Home / 1,347.09-1,856.68-948.90

Finding the Fourth Proportional to 1,347.09, 1,856.68 and 948.90

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Solution

The fourth proportional to 1,347.09, 1,856.68 and 948.90 is: 1,307.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.09 : 1,856.68 = 948.90 : x
  2. Step 2: Convert to fraction form
    1,347.09/1,856.68 = 948.90/x
  3. Step 3: Cross multiply
    1,347.09x = 1,856.68 × 948.90
  4. Step 4: Simplify right side
    1,347.09x = 1,761,803.65
  5. Step 5: Solve for x
    x = 1,761,803.65/1,347.09
  6. Step 6: Final answer
    x = 1,307.86

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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.