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Finding the Fourth Proportional to 2,516.40, 3,774.51 and 785.03

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Solution

The fourth proportional to 2,516.40, 3,774.51 and 785.03 is: 1,177.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,516.40 : 3,774.51 = 785.03 : x
  2. Step 2: Convert to fraction form
    2,516.40/3,774.51 = 785.03/x
  3. Step 3: Cross multiply
    2,516.40x = 3,774.51 × 785.03
  4. Step 4: Simplify right side
    2,516.40x = 2,963,084.71
  5. Step 5: Solve for x
    x = 2,963,084.71/2,516.40
  6. Step 6: Final answer
    x = 1,177.51

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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.