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Finding the Fourth Proportional to 8,893.81, 12,264.24 and 7,639.01

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Solution

The fourth proportional to 8,893.81, 12,264.24 and 7,639.01 is: 10,533.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,893.81 : 12,264.24 = 7,639.01 : x
  2. Step 2: Convert to fraction form
    8,893.81/12,264.24 = 7,639.01/x
  3. Step 3: Cross multiply
    8,893.81x = 12,264.24 × 7,639.01
  4. Step 4: Simplify right side
    8,893.81x = 93,686,652.00
  5. Step 5: Solve for x
    x = 93,686,652.00/8,893.81
  6. Step 6: Final answer
    x = 10,533.92

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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.