Home / 1,403.19-1,931.54-1,214.06

Finding the Fourth Proportional to 1,403.19, 1,931.54 and 1,214.06

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Solution

The fourth proportional to 1,403.19, 1,931.54 and 1,214.06 is: 1,671.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.19 : 1,931.54 = 1,214.06 : x
  2. Step 2: Convert to fraction form
    1,403.19/1,931.54 = 1,214.06/x
  3. Step 3: Cross multiply
    1,403.19x = 1,931.54 × 1,214.06
  4. Step 4: Simplify right side
    1,403.19x = 2,344,989.72
  5. Step 5: Solve for x
    x = 2,344,989.72/1,403.19
  6. Step 6: Final answer
    x = 1,671.18

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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.