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Finding the Fourth Proportional to 1,335.20, 2,000.93 and 970.70

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Solution

The fourth proportional to 1,335.20, 2,000.93 and 970.70 is: 1,454.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.20 : 2,000.93 = 970.70 : x
  2. Step 2: Convert to fraction form
    1,335.20/2,000.93 = 970.70/x
  3. Step 3: Cross multiply
    1,335.20x = 2,000.93 × 970.70
  4. Step 4: Simplify right side
    1,335.20x = 1,942,287.89
  5. Step 5: Solve for x
    x = 1,942,287.89/1,335.20
  6. Step 6: Final answer
    x = 1,454.68

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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.