Home / 4,885.45-7,328.19-1,187.69

Finding the Fourth Proportional to 4,885.45, 7,328.19 and 1,187.69

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Solution

The fourth proportional to 4,885.45, 7,328.19 and 1,187.69 is: 1,781.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.45 : 7,328.19 = 1,187.69 : x
  2. Step 2: Convert to fraction form
    4,885.45/7,328.19 = 1,187.69/x
  3. Step 3: Cross multiply
    4,885.45x = 7,328.19 × 1,187.69
  4. Step 4: Simplify right side
    4,885.45x = 8,703,575.40
  5. Step 5: Solve for x
    x = 8,703,575.40/4,885.45
  6. Step 6: Final answer
    x = 1,781.53

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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.