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Finding the Fourth Proportional to 1,656.68, 2,285.42 and 993.39

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Solution

The fourth proportional to 1,656.68, 2,285.42 and 993.39 is: 1,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,656.68 : 2,285.42 = 993.39 : x
  2. Step 2: Convert to fraction form
    1,656.68/2,285.42 = 993.39/x
  3. Step 3: Cross multiply
    1,656.68x = 2,285.42 × 993.39
  4. Step 4: Simplify right side
    1,656.68x = 2,270,308.41
  5. Step 5: Solve for x
    x = 2,270,308.41/1,656.68
  6. Step 6: Final answer
    x = 1,370.40

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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.