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Finding the Fourth Proportional to 2,845.12, 4,266.24 and 970.40

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Solution

The fourth proportional to 2,845.12, 4,266.24 and 970.40 is: 1,455.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.12 : 4,266.24 = 970.40 : x
  2. Step 2: Convert to fraction form
    2,845.12/4,266.24 = 970.40/x
  3. Step 3: Cross multiply
    2,845.12x = 4,266.24 × 970.40
  4. Step 4: Simplify right side
    2,845.12x = 4,139,959.30
  5. Step 5: Solve for x
    x = 4,139,959.30/2,845.12
  6. Step 6: Final answer
    x = 1,455.11

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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.