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Finding the Fourth Proportional to 9,133.70, 13,700.64 and 3,210.72

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Solution

The fourth proportional to 9,133.70, 13,700.64 and 3,210.72 is: 4,816.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,133.70 : 13,700.64 = 3,210.72 : x
  2. Step 2: Convert to fraction form
    9,133.70/13,700.64 = 3,210.72/x
  3. Step 3: Cross multiply
    9,133.70x = 13,700.64 × 3,210.72
  4. Step 4: Simplify right side
    9,133.70x = 43,988,918.86
  5. Step 5: Solve for x
    x = 43,988,918.86/9,133.70
  6. Step 6: Final answer
    x = 4,816.11

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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.