Home / 5,187.36-7,780.15-1,488.63

Finding the Fourth Proportional to 5,187.36, 7,780.15 and 1,488.63

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Solution

The fourth proportional to 5,187.36, 7,780.15 and 1,488.63 is: 2,232.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.36 : 7,780.15 = 1,488.63 : x
  2. Step 2: Convert to fraction form
    5,187.36/7,780.15 = 1,488.63/x
  3. Step 3: Cross multiply
    5,187.36x = 7,780.15 × 1,488.63
  4. Step 4: Simplify right side
    5,187.36x = 11,581,764.69
  5. Step 5: Solve for x
    x = 11,581,764.69/5,187.36
  6. Step 6: Final answer
    x = 2,232.69

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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.