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Finding the Fourth Proportional to 1,943.90, 2,916.42 and 627.63

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Solution

The fourth proportional to 1,943.90, 2,916.42 and 627.63 is: 941.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.90 : 2,916.42 = 627.63 : x
  2. Step 2: Convert to fraction form
    1,943.90/2,916.42 = 627.63/x
  3. Step 3: Cross multiply
    1,943.90x = 2,916.42 × 627.63
  4. Step 4: Simplify right side
    1,943.90x = 1,830,424.10
  5. Step 5: Solve for x
    x = 1,830,424.10/1,943.90
  6. Step 6: Final answer
    x = 941.62

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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.