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Finding the Fourth Proportional to 5,779.08, 7,978.08 and 4,007.61

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Solution

The fourth proportional to 5,779.08, 7,978.08 and 4,007.61 is: 5,532.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,779.08 : 7,978.08 = 4,007.61 : x
  2. Step 2: Convert to fraction form
    5,779.08/7,978.08 = 4,007.61/x
  3. Step 3: Cross multiply
    5,779.08x = 7,978.08 × 4,007.61
  4. Step 4: Simplify right side
    5,779.08x = 31,973,033.19
  5. Step 5: Solve for x
    x = 31,973,033.19/5,779.08
  6. Step 6: Final answer
    x = 5,532.55

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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.