Home / 7,408.74-10,219.62-4,890.90

Finding the Fourth Proportional to 7,408.74, 10,219.62 and 4,890.90

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Solution

The fourth proportional to 7,408.74, 10,219.62 and 4,890.90 is: 6,746.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.74 : 10,219.62 = 4,890.90 : x
  2. Step 2: Convert to fraction form
    7,408.74/10,219.62 = 4,890.90/x
  3. Step 3: Cross multiply
    7,408.74x = 10,219.62 × 4,890.90
  4. Step 4: Simplify right side
    7,408.74x = 49,983,139.46
  5. Step 5: Solve for x
    x = 49,983,139.46/7,408.74
  6. Step 6: Final answer
    x = 6,746.51

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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.