Home / 4,720.61-7,081.76-1,945.74

Finding the Fourth Proportional to 4,720.61, 7,081.76 and 1,945.74

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Solution

The fourth proportional to 4,720.61, 7,081.76 and 1,945.74 is: 2,918.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.61 : 7,081.76 = 1,945.74 : x
  2. Step 2: Convert to fraction form
    4,720.61/7,081.76 = 1,945.74/x
  3. Step 3: Cross multiply
    4,720.61x = 7,081.76 × 1,945.74
  4. Step 4: Simplify right side
    4,720.61x = 13,779,263.70
  5. Step 5: Solve for x
    x = 13,779,263.70/4,720.61
  6. Step 6: Final answer
    x = 2,918.96

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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.