Home / 9,639.77-13,302.90-5,390.98

Finding the Fourth Proportional to 9,639.77, 13,302.90 and 5,390.98

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Solution

The fourth proportional to 9,639.77, 13,302.90 and 5,390.98 is: 7,439.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,639.77 : 13,302.90 = 5,390.98 : x
  2. Step 2: Convert to fraction form
    9,639.77/13,302.90 = 5,390.98/x
  3. Step 3: Cross multiply
    9,639.77x = 13,302.90 × 5,390.98
  4. Step 4: Simplify right side
    9,639.77x = 71,715,667.84
  5. Step 5: Solve for x
    x = 71,715,667.84/9,639.77
  6. Step 6: Final answer
    x = 7,439.56

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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.