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Finding the Fourth Proportional to 2,491.16, 3,438.06 and 1,869.08

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Solution

The fourth proportional to 2,491.16, 3,438.06 and 1,869.08 is: 2,579.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.16 : 3,438.06 = 1,869.08 : x
  2. Step 2: Convert to fraction form
    2,491.16/3,438.06 = 1,869.08/x
  3. Step 3: Cross multiply
    2,491.16x = 3,438.06 × 1,869.08
  4. Step 4: Simplify right side
    2,491.16x = 6,426,009.18
  5. Step 5: Solve for x
    x = 6,426,009.18/2,491.16
  6. Step 6: Final answer
    x = 2,579.52

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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.