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Finding the Fourth Proportional to 9,579, 13,218.78 and 5,330.08

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Solution

The fourth proportional to 9,579, 13,218.78 and 5,330.08 is: 7,355.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579 : 13,218.78 = 5,330.08 : x
  2. Step 2: Convert to fraction form
    9,579/13,218.78 = 5,330.08/x
  3. Step 3: Cross multiply
    9,579x = 13,218.78 × 5,330.08
  4. Step 4: Simplify right side
    9,579x = 70,457,154.90
  5. Step 5: Solve for x
    x = 70,457,154.90/9,579
  6. Step 6: Final answer
    x = 7,355.38

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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.