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Finding the Fourth Proportional to 5,657.40, 7,790.74 and 5,296.39

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Solution

The fourth proportional to 5,657.40, 7,790.74 and 5,296.39 is: 7,293.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.40 : 7,790.74 = 5,296.39 : x
  2. Step 2: Convert to fraction form
    5,657.40/7,790.74 = 5,296.39/x
  3. Step 3: Cross multiply
    5,657.40x = 7,790.74 × 5,296.39
  4. Step 4: Simplify right side
    5,657.40x = 41,262,764.71
  5. Step 5: Solve for x
    x = 41,262,764.71/5,657.40
  6. Step 6: Final answer
    x = 7,293.59

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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.