Home / 9,368.38-12,928.44-5,389.66

Finding the Fourth Proportional to 9,368.38, 12,928.44 and 5,389.66

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Solution

The fourth proportional to 9,368.38, 12,928.44 and 5,389.66 is: 7,437.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.38 : 12,928.44 = 5,389.66 : x
  2. Step 2: Convert to fraction form
    9,368.38/12,928.44 = 5,389.66/x
  3. Step 3: Cross multiply
    9,368.38x = 12,928.44 × 5,389.66
  4. Step 4: Simplify right side
    9,368.38x = 69,679,895.93
  5. Step 5: Solve for x
    x = 69,679,895.93/9,368.38
  6. Step 6: Final answer
    x = 7,437.77

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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.