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Finding the Fourth Proportional to 2,303.40, 3,455.10 and 842.88

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Solution

The fourth proportional to 2,303.40, 3,455.10 and 842.88 is: 1,264.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,303.40 : 3,455.10 = 842.88 : x
  2. Step 2: Convert to fraction form
    2,303.40/3,455.10 = 842.88/x
  3. Step 3: Cross multiply
    2,303.40x = 3,455.10 × 842.88
  4. Step 4: Simplify right side
    2,303.40x = 2,912,234.69
  5. Step 5: Solve for x
    x = 2,912,234.69/2,303.40
  6. Step 6: Final answer
    x = 1,264.32

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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.