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Finding the Fourth Proportional to 2,259.57, 3,388.40 and 778.94

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Solution

The fourth proportional to 2,259.57, 3,388.40 and 778.94 is: 1,168.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.57 : 3,388.40 = 778.94 : x
  2. Step 2: Convert to fraction form
    2,259.57/3,388.40 = 778.94/x
  3. Step 3: Cross multiply
    2,259.57x = 3,388.40 × 778.94
  4. Step 4: Simplify right side
    2,259.57x = 2,639,339.46
  5. Step 5: Solve for x
    x = 2,639,339.46/2,259.57
  6. Step 6: Final answer
    x = 1,168.07

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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.