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Finding the Fourth Proportional to 1,715.78, 2,573.55 and 983.06

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Solution

The fourth proportional to 1,715.78, 2,573.55 and 983.06 is: 1,474.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.78 : 2,573.55 = 983.06 : x
  2. Step 2: Convert to fraction form
    1,715.78/2,573.55 = 983.06/x
  3. Step 3: Cross multiply
    1,715.78x = 2,573.55 × 983.06
  4. Step 4: Simplify right side
    1,715.78x = 2,529,954.06
  5. Step 5: Solve for x
    x = 2,529,954.06/1,715.78
  6. Step 6: Final answer
    x = 1,474.52

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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.