Home / 1,681.40-2,522.10-1,292.15

Finding the Fourth Proportional to 1,681.40, 2,522.10 and 1,292.15

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Solution

The fourth proportional to 1,681.40, 2,522.10 and 1,292.15 is: 1,938.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.40 : 2,522.10 = 1,292.15 : x
  2. Step 2: Convert to fraction form
    1,681.40/2,522.10 = 1,292.15/x
  3. Step 3: Cross multiply
    1,681.40x = 2,522.10 × 1,292.15
  4. Step 4: Simplify right side
    1,681.40x = 3,258,931.52
  5. Step 5: Solve for x
    x = 3,258,931.52/1,681.40
  6. Step 6: Final answer
    x = 1,938.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.