Home / 3,391.74-4,680.51-1,858.65

Finding the Fourth Proportional to 3,391.74, 4,680.51 and 1,858.65

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Solution

The fourth proportional to 3,391.74, 4,680.51 and 1,858.65 is: 2,564.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.74 : 4,680.51 = 1,858.65 : x
  2. Step 2: Convert to fraction form
    3,391.74/4,680.51 = 1,858.65/x
  3. Step 3: Cross multiply
    3,391.74x = 4,680.51 × 1,858.65
  4. Step 4: Simplify right side
    3,391.74x = 8,699,429.91
  5. Step 5: Solve for x
    x = 8,699,429.91/3,391.74
  6. Step 6: Final answer
    x = 2,564.89

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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.