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Finding the Fourth Proportional to 8,903.01, 12,278.03 and 7,643.67

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Solution

The fourth proportional to 8,903.01, 12,278.03 and 7,643.67 is: 10,541.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.01 : 12,278.03 = 7,643.67 : x
  2. Step 2: Convert to fraction form
    8,903.01/12,278.03 = 7,643.67/x
  3. Step 3: Cross multiply
    8,903.01x = 12,278.03 × 7,643.67
  4. Step 4: Simplify right side
    8,903.01x = 93,849,168.30
  5. Step 5: Solve for x
    x = 93,849,168.30/8,903.01
  6. Step 6: Final answer
    x = 10,541.28

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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.