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Finding the Fourth Proportional to 7,764.30, 11,646.45 and 7,424.10

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Solution

The fourth proportional to 7,764.30, 11,646.45 and 7,424.10 is: 11,136.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.30 : 11,646.45 = 7,424.10 : x
  2. Step 2: Convert to fraction form
    7,764.30/11,646.45 = 7,424.10/x
  3. Step 3: Cross multiply
    7,764.30x = 11,646.45 × 7,424.10
  4. Step 4: Simplify right side
    7,764.30x = 86,464,409.45
  5. Step 5: Solve for x
    x = 86,464,409.45/7,764.30
  6. Step 6: Final answer
    x = 11,136.15

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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.