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Finding the Fourth Proportional to 1,317.03, 1,793.14 and 1,312.91

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Solution

The fourth proportional to 1,317.03, 1,793.14 and 1,312.91 is: 1,787.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.03 : 1,793.14 = 1,312.91 : x
  2. Step 2: Convert to fraction form
    1,317.03/1,793.14 = 1,312.91/x
  3. Step 3: Cross multiply
    1,317.03x = 1,793.14 × 1,312.91
  4. Step 4: Simplify right side
    1,317.03x = 2,354,237.56
  5. Step 5: Solve for x
    x = 2,354,237.56/1,317.03
  6. Step 6: Final answer
    x = 1,787.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.