Home / 1,728.48-2,397.52-1,666.21

Finding the Fourth Proportional to 1,728.48, 2,397.52 and 1,666.21

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Solution

The fourth proportional to 1,728.48, 2,397.52 and 1,666.21 is: 2,311.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.48 : 2,397.52 = 1,666.21 : x
  2. Step 2: Convert to fraction form
    1,728.48/2,397.52 = 1,666.21/x
  3. Step 3: Cross multiply
    1,728.48x = 2,397.52 × 1,666.21
  4. Step 4: Simplify right side
    1,728.48x = 3,994,771.80
  5. Step 5: Solve for x
    x = 3,994,771.80/1,728.48
  6. Step 6: Final answer
    x = 2,311.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.