Home / 7,711.10-11,559.56-2,779.53

Finding the Fourth Proportional to 7,711.10, 11,559.56 and 2,779.53

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Solution

The fourth proportional to 7,711.10, 11,559.56 and 2,779.53 is: 4,166.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.10 : 11,559.56 = 2,779.53 : x
  2. Step 2: Convert to fraction form
    7,711.10/11,559.56 = 2,779.53/x
  3. Step 3: Cross multiply
    7,711.10x = 11,559.56 × 2,779.53
  4. Step 4: Simplify right side
    7,711.10x = 32,130,143.81
  5. Step 5: Solve for x
    x = 32,130,143.81/7,711.10
  6. Step 6: Final answer
    x = 4,166.74

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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.