Home / 5,187.18-7,778.13-1,899.42

Finding the Fourth Proportional to 5,187.18, 7,778.13 and 1,899.42

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Solution

The fourth proportional to 5,187.18, 7,778.13 and 1,899.42 is: 2,848.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.18 : 7,778.13 = 1,899.42 : x
  2. Step 2: Convert to fraction form
    5,187.18/7,778.13 = 1,899.42/x
  3. Step 3: Cross multiply
    5,187.18x = 7,778.13 × 1,899.42
  4. Step 4: Simplify right side
    5,187.18x = 14,773,935.68
  5. Step 5: Solve for x
    x = 14,773,935.68/5,187.18
  6. Step 6: Final answer
    x = 2,848.16

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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.