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Finding the Fourth Proportional to 4,613.91, 6,916.01 and 1,980.60

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Solution

The fourth proportional to 4,613.91, 6,916.01 and 1,980.60 is: 2,968.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,613.91 : 6,916.01 = 1,980.60 : x
  2. Step 2: Convert to fraction form
    4,613.91/6,916.01 = 1,980.60/x
  3. Step 3: Cross multiply
    4,613.91x = 6,916.01 × 1,980.60
  4. Step 4: Simplify right side
    4,613.91x = 13,697,839.50
  5. Step 5: Solve for x
    x = 13,697,839.50/4,613.91
  6. Step 6: Final answer
    x = 2,968.81

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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.