Home / 1,869.77-2,580.20-1,123.46

Finding the Fourth Proportional to 1,869.77, 2,580.20 and 1,123.46

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Solution

The fourth proportional to 1,869.77, 2,580.20 and 1,123.46 is: 1,550.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.77 : 2,580.20 = 1,123.46 : x
  2. Step 2: Convert to fraction form
    1,869.77/2,580.20 = 1,123.46/x
  3. Step 3: Cross multiply
    1,869.77x = 2,580.20 × 1,123.46
  4. Step 4: Simplify right side
    1,869.77x = 2,898,732.97
  5. Step 5: Solve for x
    x = 2,898,732.97/1,869.77
  6. Step 6: Final answer
    x = 1,550.32

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1.5x scale

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.