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Finding the Fourth Proportional to 5,779.08, 7,973.10 and 3,420.90

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Solution

The fourth proportional to 5,779.08, 7,973.10 and 3,420.90 is: 4,719.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.08 : 7,973.10 = 3,420.90 : x
  2. Step 2: Convert to fraction form
    5,779.08/7,973.10 = 3,420.90/x
  3. Step 3: Cross multiply
    5,779.08x = 7,973.10 × 3,420.90
  4. Step 4: Simplify right side
    5,779.08x = 27,275,177.79
  5. Step 5: Solve for x
    x = 27,275,177.79/5,779.08
  6. Step 6: Final answer
    x = 4,719.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.