Home / 9,368.33-12,928.77-5,390.03

Finding the Fourth Proportional to 9,368.33, 12,928.77 and 5,390.03

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Solution

The fourth proportional to 9,368.33, 12,928.77 and 5,390.03 is: 7,438.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.33 : 12,928.77 = 5,390.03 : x
  2. Step 2: Convert to fraction form
    9,368.33/12,928.77 = 5,390.03/x
  3. Step 3: Cross multiply
    9,368.33x = 12,928.77 × 5,390.03
  4. Step 4: Simplify right side
    9,368.33x = 69,686,490.49
  5. Step 5: Solve for x
    x = 69,686,490.49/9,368.33
  6. Step 6: Final answer
    x = 7,438.52

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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.