Home / 8,712.36-12,023.10-5,355.72

Finding the Fourth Proportional to 8,712.36, 12,023.10 and 5,355.72

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Solution

The fourth proportional to 8,712.36, 12,023.10 and 5,355.72 is: 7,390.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.36 : 12,023.10 = 5,355.72 : x
  2. Step 2: Convert to fraction form
    8,712.36/12,023.10 = 5,355.72/x
  3. Step 3: Cross multiply
    8,712.36x = 12,023.10 × 5,355.72
  4. Step 4: Simplify right side
    8,712.36x = 64,392,357.13
  5. Step 5: Solve for x
    x = 64,392,357.13/8,712.36
  6. Step 6: Final answer
    x = 7,390.92

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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.