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Finding the Fourth Proportional to 2,946.95, 4,420.52 and 972.62

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Solution

The fourth proportional to 2,946.95, 4,420.52 and 972.62 is: 1,458.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,946.95 : 4,420.52 = 972.62 : x
  2. Step 2: Convert to fraction form
    2,946.95/4,420.52 = 972.62/x
  3. Step 3: Cross multiply
    2,946.95x = 4,420.52 × 972.62
  4. Step 4: Simplify right side
    2,946.95x = 4,299,499.65
  5. Step 5: Solve for x
    x = 4,299,499.65/2,946.95
  6. Step 6: Final answer
    x = 1,458.97

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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.