Home / 2,172.49-2,995.18-1,666.85

Finding the Fourth Proportional to 2,172.49, 2,995.18 and 1,666.85

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Solution

The fourth proportional to 2,172.49, 2,995.18 and 1,666.85 is: 2,298.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.49 : 2,995.18 = 1,666.85 : x
  2. Step 2: Convert to fraction form
    2,172.49/2,995.18 = 1,666.85/x
  3. Step 3: Cross multiply
    2,172.49x = 2,995.18 × 1,666.85
  4. Step 4: Simplify right side
    2,172.49x = 4,992,496.64
  5. Step 5: Solve for x
    x = 4,992,496.64/2,172.49
  6. Step 6: Final answer
    x = 2,298.06

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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.