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Finding the Fourth Proportional to 1,946.62, 2,920.02 and 907.57

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Solution

The fourth proportional to 1,946.62, 2,920.02 and 907.57 is: 1,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.62 : 2,920.02 = 907.57 : x
  2. Step 2: Convert to fraction form
    1,946.62/2,920.02 = 907.57/x
  3. Step 3: Cross multiply
    1,946.62x = 2,920.02 × 907.57
  4. Step 4: Simplify right side
    1,946.62x = 2,650,122.55
  5. Step 5: Solve for x
    x = 2,650,122.55/1,946.62
  6. Step 6: Final answer
    x = 1,361.40

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1.5x scale

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.