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Finding the Fourth Proportional to 1,915.62, 2,637.08 and 1,719.06

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Solution

The fourth proportional to 1,915.62, 2,637.08 and 1,719.06 is: 2,366.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.62 : 2,637.08 = 1,719.06 : x
  2. Step 2: Convert to fraction form
    1,915.62/2,637.08 = 1,719.06/x
  3. Step 3: Cross multiply
    1,915.62x = 2,637.08 × 1,719.06
  4. Step 4: Simplify right side
    1,915.62x = 4,533,298.74
  5. Step 5: Solve for x
    x = 4,533,298.74/1,915.62
  6. Step 6: Final answer
    x = 2,366.49

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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.