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Finding the Fourth Proportional to 8,965.40, 13,439.82 and 4,808.30

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Solution

The fourth proportional to 8,965.40, 13,439.82 and 4,808.30 is: 7,208.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.40 : 13,439.82 = 4,808.30 : x
  2. Step 2: Convert to fraction form
    8,965.40/13,439.82 = 4,808.30/x
  3. Step 3: Cross multiply
    8,965.40x = 13,439.82 × 4,808.30
  4. Step 4: Simplify right side
    8,965.40x = 64,622,686.51
  5. Step 5: Solve for x
    x = 64,622,686.51/8,965.40
  6. Step 6: Final answer
    x = 7,208.01

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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.