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Finding the Fourth Proportional to 3,281.76, 4,528.68 and 1,865.64

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Solution

The fourth proportional to 3,281.76, 4,528.68 and 1,865.64 is: 2,574.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.76 : 4,528.68 = 1,865.64 : x
  2. Step 2: Convert to fraction form
    3,281.76/4,528.68 = 1,865.64/x
  3. Step 3: Cross multiply
    3,281.76x = 4,528.68 × 1,865.64
  4. Step 4: Simplify right side
    3,281.76x = 8,448,886.56
  5. Step 5: Solve for x
    x = 8,448,886.56/3,281.76
  6. Step 6: Final answer
    x = 2,574.50

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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.