Home / 7,038.36-9,712.80-3,894.57

Finding the Fourth Proportional to 7,038.36, 9,712.80 and 3,894.57

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Solution

The fourth proportional to 7,038.36, 9,712.80 and 3,894.57 is: 5,374.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,038.36 : 9,712.80 = 3,894.57 : x
  2. Step 2: Convert to fraction form
    7,038.36/9,712.80 = 3,894.57/x
  3. Step 3: Cross multiply
    7,038.36x = 9,712.80 × 3,894.57
  4. Step 4: Simplify right side
    7,038.36x = 37,827,179.50
  5. Step 5: Solve for x
    x = 37,827,179.50/7,038.36
  6. Step 6: Final answer
    x = 5,374.43

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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.