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Finding the Fourth Proportional to 1,945.17, 2,916.12 and 848.70

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Solution

The fourth proportional to 1,945.17, 2,916.12 and 848.70 is: 1,272.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.17 : 2,916.12 = 848.70 : x
  2. Step 2: Convert to fraction form
    1,945.17/2,916.12 = 848.70/x
  3. Step 3: Cross multiply
    1,945.17x = 2,916.12 × 848.70
  4. Step 4: Simplify right side
    1,945.17x = 2,474,914.23
  5. Step 5: Solve for x
    x = 2,474,914.23/1,945.17
  6. Step 6: Final answer
    x = 1,272.34

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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.