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Finding the Fourth Proportional to 2,922.28, 4,381.86 and 973.78

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Solution

The fourth proportional to 2,922.28, 4,381.86 and 973.78 is: 1,460.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,922.28 : 4,381.86 = 973.78 : x
  2. Step 2: Convert to fraction form
    2,922.28/4,381.86 = 973.78/x
  3. Step 3: Cross multiply
    2,922.28x = 4,381.86 × 973.78
  4. Step 4: Simplify right side
    2,922.28x = 4,266,967.63
  5. Step 5: Solve for x
    x = 4,266,967.63/2,922.28
  6. Step 6: Final answer
    x = 1,460.15

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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.