Home / 8,717.45-12,026.36-5,178.74

Finding the Fourth Proportional to 8,717.45, 12,026.36 and 5,178.74

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Solution

The fourth proportional to 8,717.45, 12,026.36 and 5,178.74 is: 7,144.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.45 : 12,026.36 = 5,178.74 : x
  2. Step 2: Convert to fraction form
    8,717.45/12,026.36 = 5,178.74/x
  3. Step 3: Cross multiply
    8,717.45x = 12,026.36 × 5,178.74
  4. Step 4: Simplify right side
    8,717.45x = 62,281,344.40
  5. Step 5: Solve for x
    x = 62,281,344.40/8,717.45
  6. Step 6: Final answer
    x = 7,144.45

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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.