Home / 8,228.36-11,355.72-5,429

Finding the Fourth Proportional to 8,228.36, 11,355.72 and 5,429

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Solution

The fourth proportional to 8,228.36, 11,355.72 and 5,429 is: 7,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,228.36 : 11,355.72 = 5,429 : x
  2. Step 2: Convert to fraction form
    8,228.36/11,355.72 = 5,429/x
  3. Step 3: Cross multiply
    8,228.36x = 11,355.72 × 5,429
  4. Step 4: Simplify right side
    8,228.36x = 61,650,203.88
  5. Step 5: Solve for x
    x = 61,650,203.88/8,228.36
  6. Step 6: Final answer
    x = 7,492.40

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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.