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Finding the Fourth Proportional to 5,779.55, 8,669.80 and 1,619.55

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Solution

The fourth proportional to 5,779.55, 8,669.80 and 1,619.55 is: 2,429.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.55 : 8,669.80 = 1,619.55 : x
  2. Step 2: Convert to fraction form
    5,779.55/8,669.80 = 1,619.55/x
  3. Step 3: Cross multiply
    5,779.55x = 8,669.80 × 1,619.55
  4. Step 4: Simplify right side
    5,779.55x = 14,041,174.59
  5. Step 5: Solve for x
    x = 14,041,174.59/5,779.55
  6. Step 6: Final answer
    x = 2,429.46

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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.