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Finding the Fourth Proportional to 3,285.91, 4,928.88 and 977.59

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Solution

The fourth proportional to 3,285.91, 4,928.88 and 977.59 is: 1,466.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.91 : 4,928.88 = 977.59 : x
  2. Step 2: Convert to fraction form
    3,285.91/4,928.88 = 977.59/x
  3. Step 3: Cross multiply
    3,285.91x = 4,928.88 × 977.59
  4. Step 4: Simplify right side
    3,285.91x = 4,818,423.80
  5. Step 5: Solve for x
    x = 4,818,423.80/3,285.91
  6. Step 6: Final answer
    x = 1,466.39

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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.