Home / 8,712.36-12,022.20-5,126.40

Finding the Fourth Proportional to 8,712.36, 12,022.20 and 5,126.40

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Solution

The fourth proportional to 8,712.36, 12,022.20 and 5,126.40 is: 7,073.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.36 : 12,022.20 = 5,126.40 : x
  2. Step 2: Convert to fraction form
    8,712.36/12,022.20 = 5,126.40/x
  3. Step 3: Cross multiply
    8,712.36x = 12,022.20 × 5,126.40
  4. Step 4: Simplify right side
    8,712.36x = 61,630,606.08
  5. Step 5: Solve for x
    x = 61,630,606.08/8,712.36
  6. Step 6: Final answer
    x = 7,073.93

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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.