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Finding the Fourth Proportional to 7,779.89, 10,737.21 and 4,754.39

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Solution

The fourth proportional to 7,779.89, 10,737.21 and 4,754.39 is: 6,561.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.89 : 10,737.21 = 4,754.39 : x
  2. Step 2: Convert to fraction form
    7,779.89/10,737.21 = 4,754.39/x
  3. Step 3: Cross multiply
    7,779.89x = 10,737.21 × 4,754.39
  4. Step 4: Simplify right side
    7,779.89x = 51,048,818.28
  5. Step 5: Solve for x
    x = 51,048,818.28/7,779.89
  6. Step 6: Final answer
    x = 6,561.64

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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.