Home / 1,869.60-2,580.24-1,123.80

Finding the Fourth Proportional to 1,869.60, 2,580.24 and 1,123.80

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Solution

The fourth proportional to 1,869.60, 2,580.24 and 1,123.80 is: 1,550.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.60 : 2,580.24 = 1,123.80 : x
  2. Step 2: Convert to fraction form
    1,869.60/2,580.24 = 1,123.80/x
  3. Step 3: Cross multiply
    1,869.60x = 2,580.24 × 1,123.80
  4. Step 4: Simplify right side
    1,869.60x = 2,899,673.71
  5. Step 5: Solve for x
    x = 2,899,673.71/1,869.60
  6. Step 6: Final answer
    x = 1,550.96

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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.