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Finding the Fourth Proportional to 6,904.40, 10,340.40 and 4,701.20

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Solution

The fourth proportional to 6,904.40, 10,340.40 and 4,701.20 is: 7,040.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,904.40 : 10,340.40 = 4,701.20 : x
  2. Step 2: Convert to fraction form
    6,904.40/10,340.40 = 4,701.20/x
  3. Step 3: Cross multiply
    6,904.40x = 10,340.40 × 4,701.20
  4. Step 4: Simplify right side
    6,904.40x = 48,612,288.48
  5. Step 5: Solve for x
    x = 48,612,288.48/6,904.40
  6. Step 6: Final answer
    x = 7,040.77

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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.