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Finding the Fourth Proportional to 7,779.43, 10,743.20 and 5,541.40

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Solution

The fourth proportional to 7,779.43, 10,743.20 and 5,541.40 is: 7,652.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.43 : 10,743.20 = 5,541.40 : x
  2. Step 2: Convert to fraction form
    7,779.43/10,743.20 = 5,541.40/x
  3. Step 3: Cross multiply
    7,779.43x = 10,743.20 × 5,541.40
  4. Step 4: Simplify right side
    7,779.43x = 59,532,368.48
  5. Step 5: Solve for x
    x = 59,532,368.48/7,779.43
  6. Step 6: Final answer
    x = 7,652.54

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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.