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Finding the Fourth Proportional to 3,315.08, 4,970.99 and 1,928.90

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Solution

The fourth proportional to 3,315.08, 4,970.99 and 1,928.90 is: 2,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.08 : 4,970.99 = 1,928.90 : x
  2. Step 2: Convert to fraction form
    3,315.08/4,970.99 = 1,928.90/x
  3. Step 3: Cross multiply
    3,315.08x = 4,970.99 × 1,928.90
  4. Step 4: Simplify right side
    3,315.08x = 9,588,542.61
  5. Step 5: Solve for x
    x = 9,588,542.61/3,315.08
  6. Step 6: Final answer
    x = 2,892.40

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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.