Home / 1,869.41-2,580.28-1,123.40

Finding the Fourth Proportional to 1,869.41, 2,580.28 and 1,123.40

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Solution

The fourth proportional to 1,869.41, 2,580.28 and 1,123.40 is: 1,550.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.41 : 2,580.28 = 1,123.40 : x
  2. Step 2: Convert to fraction form
    1,869.41/2,580.28 = 1,123.40/x
  3. Step 3: Cross multiply
    1,869.41x = 2,580.28 × 1,123.40
  4. Step 4: Simplify right side
    1,869.41x = 2,898,690.19
  5. Step 5: Solve for x
    x = 2,898,690.19/1,869.41
  6. Step 6: Final answer
    x = 1,550.59

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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.