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Finding the Fourth Proportional to 8,368.60, 11,560.44 and 7,621.36

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Solution

The fourth proportional to 8,368.60, 11,560.44 and 7,621.36 is: 10,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.60 : 11,560.44 = 7,621.36 : x
  2. Step 2: Convert to fraction form
    8,368.60/11,560.44 = 7,621.36/x
  3. Step 3: Cross multiply
    8,368.60x = 11,560.44 × 7,621.36
  4. Step 4: Simplify right side
    8,368.60x = 88,106,275.00
  5. Step 5: Solve for x
    x = 88,106,275.00/8,368.60
  6. Step 6: Final answer
    x = 10,528.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.