Home / 1,869.72-2,580.13-1,030.38

Finding the Fourth Proportional to 1,869.72, 2,580.13 and 1,030.38

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Solution

The fourth proportional to 1,869.72, 2,580.13 and 1,030.38 is: 1,421.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.72 : 2,580.13 = 1,030.38 : x
  2. Step 2: Convert to fraction form
    1,869.72/2,580.13 = 1,030.38/x
  3. Step 3: Cross multiply
    1,869.72x = 2,580.13 × 1,030.38
  4. Step 4: Simplify right side
    1,869.72x = 2,658,514.35
  5. Step 5: Solve for x
    x = 2,658,514.35/1,869.72
  6. Step 6: Final answer
    x = 1,421.88

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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.