Home / 4,885.61-7,328.32-1,187.86

Finding the Fourth Proportional to 4,885.61, 7,328.32 and 1,187.86

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Solution

The fourth proportional to 4,885.61, 7,328.32 and 1,187.86 is: 1,781.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.61 : 7,328.32 = 1,187.86 : x
  2. Step 2: Convert to fraction form
    4,885.61/7,328.32 = 1,187.86/x
  3. Step 3: Cross multiply
    4,885.61x = 7,328.32 × 1,187.86
  4. Step 4: Simplify right side
    4,885.61x = 8,705,012.26
  5. Step 5: Solve for x
    x = 8,705,012.26/4,885.61
  6. Step 6: Final answer
    x = 1,781.77

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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.