Home / 1,677.75-2,307.45-1,345.65

Finding the Fourth Proportional to 1,677.75, 2,307.45 and 1,345.65

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Solution

The fourth proportional to 1,677.75, 2,307.45 and 1,345.65 is: 1,850.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.75 : 2,307.45 = 1,345.65 : x
  2. Step 2: Convert to fraction form
    1,677.75/2,307.45 = 1,345.65/x
  3. Step 3: Cross multiply
    1,677.75x = 2,307.45 × 1,345.65
  4. Step 4: Simplify right side
    1,677.75x = 3,105,020.09
  5. Step 5: Solve for x
    x = 3,105,020.09/1,677.75
  6. Step 6: Final answer
    x = 1,850.70

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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.