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Finding the Fourth Proportional to 2,866.91, 3,955.74 and 1,873.65

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Solution

The fourth proportional to 2,866.91, 3,955.74 and 1,873.65 is: 2,585.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.91 : 3,955.74 = 1,873.65 : x
  2. Step 2: Convert to fraction form
    2,866.91/3,955.74 = 1,873.65/x
  3. Step 3: Cross multiply
    2,866.91x = 3,955.74 × 1,873.65
  4. Step 4: Simplify right side
    2,866.91x = 7,411,672.25
  5. Step 5: Solve for x
    x = 7,411,672.25/2,866.91
  6. Step 6: Final answer
    x = 2,585.25

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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.