Home / 1,985.13-2,979.45-1,434.69

Finding the Fourth Proportional to 1,985.13, 2,979.45 and 1,434.69

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Solution

The fourth proportional to 1,985.13, 2,979.45 and 1,434.69 is: 2,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.13 : 2,979.45 = 1,434.69 : x
  2. Step 2: Convert to fraction form
    1,985.13/2,979.45 = 1,434.69/x
  3. Step 3: Cross multiply
    1,985.13x = 2,979.45 × 1,434.69
  4. Step 4: Simplify right side
    1,985.13x = 4,274,587.12
  5. Step 5: Solve for x
    x = 4,274,587.12/1,985.13
  6. Step 6: Final answer
    x = 2,153.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.