Home / 5,123.70-7,686.36-2,488.77

Finding the Fourth Proportional to 5,123.70, 7,686.36 and 2,488.77

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Solution

The fourth proportional to 5,123.70, 7,686.36 and 2,488.77 is: 3,733.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.70 : 7,686.36 = 2,488.77 : x
  2. Step 2: Convert to fraction form
    5,123.70/7,686.36 = 2,488.77/x
  3. Step 3: Cross multiply
    5,123.70x = 7,686.36 × 2,488.77
  4. Step 4: Simplify right side
    5,123.70x = 19,129,582.18
  5. Step 5: Solve for x
    x = 19,129,582.18/5,123.70
  6. Step 6: Final answer
    x = 3,733.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.