Home / 1,153.70-1,584.05-1,123.63

Finding the Fourth Proportional to 1,153.70, 1,584.05 and 1,123.63

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Solution

The fourth proportional to 1,153.70, 1,584.05 and 1,123.63 is: 1,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.70 : 1,584.05 = 1,123.63 : x
  2. Step 2: Convert to fraction form
    1,153.70/1,584.05 = 1,123.63/x
  3. Step 3: Cross multiply
    1,153.70x = 1,584.05 × 1,123.63
  4. Step 4: Simplify right side
    1,153.70x = 1,779,886.10
  5. Step 5: Solve for x
    x = 1,779,886.10/1,153.70
  6. Step 6: Final answer
    x = 1,542.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.