Home / 1,508.21-2,081.40-948.47

Finding the Fourth Proportional to 1,508.21, 2,081.40 and 948.47

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Solution

The fourth proportional to 1,508.21, 2,081.40 and 948.47 is: 1,308.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.21 : 2,081.40 = 948.47 : x
  2. Step 2: Convert to fraction form
    1,508.21/2,081.40 = 948.47/x
  3. Step 3: Cross multiply
    1,508.21x = 2,081.40 × 948.47
  4. Step 4: Simplify right side
    1,508.21x = 1,974,130.31
  5. Step 5: Solve for x
    x = 1,974,130.31/1,508.21
  6. Step 6: Final answer
    x = 1,308.92

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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.