Home / 7,161.90-10,746.77-2,779.53

Finding the Fourth Proportional to 7,161.90, 10,746.77 and 2,779.53

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Solution

The fourth proportional to 7,161.90, 10,746.77 and 2,779.53 is: 4,170.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161.90 : 10,746.77 = 2,779.53 : x
  2. Step 2: Convert to fraction form
    7,161.90/10,746.77 = 2,779.53/x
  3. Step 3: Cross multiply
    7,161.90x = 10,746.77 × 2,779.53
  4. Step 4: Simplify right side
    7,161.90x = 29,870,955.72
  5. Step 5: Solve for x
    x = 29,870,955.72/7,161.90
  6. Step 6: Final answer
    x = 4,170.81

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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.