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Finding the Fourth Proportional to 7,289.98, 10,929.06 and 2,903.20

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Solution

The fourth proportional to 7,289.98, 10,929.06 and 2,903.20 is: 4,352.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,289.98 : 10,929.06 = 2,903.20 : x
  2. Step 2: Convert to fraction form
    7,289.98/10,929.06 = 2,903.20/x
  3. Step 3: Cross multiply
    7,289.98x = 10,929.06 × 2,903.20
  4. Step 4: Simplify right side
    7,289.98x = 31,729,246.99
  5. Step 5: Solve for x
    x = 31,729,246.99/7,289.98
  6. Step 6: Final answer
    x = 4,352.45

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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.