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Finding the Fourth Proportional to 1,785.19, 2,677.64 and 615.19

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Solution

The fourth proportional to 1,785.19, 2,677.64 and 615.19 is: 922.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.19 : 2,677.64 = 615.19 : x
  2. Step 2: Convert to fraction form
    1,785.19/2,677.64 = 615.19/x
  3. Step 3: Cross multiply
    1,785.19x = 2,677.64 × 615.19
  4. Step 4: Simplify right side
    1,785.19x = 1,647,254.28
  5. Step 5: Solve for x
    x = 1,647,254.28/1,785.19
  6. Step 6: Final answer
    x = 922.73

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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.