Home / 1,915.17-2,888.69-1,686.92

Finding the Fourth Proportional to 1,915.17, 2,888.69 and 1,686.92

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Solution

The fourth proportional to 1,915.17, 2,888.69 and 1,686.92 is: 2,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.17 : 2,888.69 = 1,686.92 : x
  2. Step 2: Convert to fraction form
    1,915.17/2,888.69 = 1,686.92/x
  3. Step 3: Cross multiply
    1,915.17x = 2,888.69 × 1,686.92
  4. Step 4: Simplify right side
    1,915.17x = 4,872,966.06
  5. Step 5: Solve for x
    x = 4,872,966.06/1,915.17
  6. Step 6: Final answer
    x = 2,544.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.