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Finding the Fourth Proportional to 2,661.53, 3,671.44 and 1,666.58

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Solution

The fourth proportional to 2,661.53, 3,671.44 and 1,666.58 is: 2,298.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661.53 : 3,671.44 = 1,666.58 : x
  2. Step 2: Convert to fraction form
    2,661.53/3,671.44 = 1,666.58/x
  3. Step 3: Cross multiply
    2,661.53x = 3,671.44 × 1,666.58
  4. Step 4: Simplify right side
    2,661.53x = 6,118,725.95
  5. Step 5: Solve for x
    x = 6,118,725.95/2,661.53
  6. Step 6: Final answer
    x = 2,298.95

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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.