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Finding the Fourth Proportional to 5,779.40, 8,663.78 and 1,881.80

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Solution

The fourth proportional to 5,779.40, 8,663.78 and 1,881.80 is: 2,820.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.40 : 8,663.78 = 1,881.80 : x
  2. Step 2: Convert to fraction form
    5,779.40/8,663.78 = 1,881.80/x
  3. Step 3: Cross multiply
    5,779.40x = 8,663.78 × 1,881.80
  4. Step 4: Simplify right side
    5,779.40x = 16,303,501.20
  5. Step 5: Solve for x
    x = 16,303,501.20/5,779.40
  6. Step 6: Final answer
    x = 2,820.97

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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.