Home / 8,420.44-11,620.16-4,885.70

Finding the Fourth Proportional to 8,420.44, 11,620.16 and 4,885.70

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Solution

The fourth proportional to 8,420.44, 11,620.16 and 4,885.70 is: 6,742.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.44 : 11,620.16 = 4,885.70 : x
  2. Step 2: Convert to fraction form
    8,420.44/11,620.16 = 4,885.70/x
  3. Step 3: Cross multiply
    8,420.44x = 11,620.16 × 4,885.70
  4. Step 4: Simplify right side
    8,420.44x = 56,772,615.71
  5. Step 5: Solve for x
    x = 56,772,615.71/8,420.44
  6. Step 6: Final answer
    x = 6,742.24

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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.