Home / 9,639.54-13,302.77-5,390.69

Finding the Fourth Proportional to 9,639.54, 13,302.77 and 5,390.69

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Solution

The fourth proportional to 9,639.54, 13,302.77 and 5,390.69 is: 7,439.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,639.54 : 13,302.77 = 5,390.69 : x
  2. Step 2: Convert to fraction form
    9,639.54/13,302.77 = 5,390.69/x
  3. Step 3: Cross multiply
    9,639.54x = 13,302.77 × 5,390.69
  4. Step 4: Simplify right side
    9,639.54x = 71,711,015.74
  5. Step 5: Solve for x
    x = 71,711,015.74/9,639.54
  6. Step 6: Final answer
    x = 7,439.26

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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.