Home / 1,869.34-2,579.19-1,123.63

Finding the Fourth Proportional to 1,869.34, 2,579.19 and 1,123.63

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Solution

The fourth proportional to 1,869.34, 2,579.19 and 1,123.63 is: 1,550.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.34 : 2,579.19 = 1,123.63 : x
  2. Step 2: Convert to fraction form
    1,869.34/2,579.19 = 1,123.63/x
  3. Step 3: Cross multiply
    1,869.34x = 2,579.19 × 1,123.63
  4. Step 4: Simplify right side
    1,869.34x = 2,898,055.26
  5. Step 5: Solve for x
    x = 2,898,055.26/1,869.34
  6. Step 6: Final answer
    x = 1,550.31

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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.