Home / 7,777.89-10,734.13-4,421.76

Finding the Fourth Proportional to 7,777.89, 10,734.13 and 4,421.76

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Solution

The fourth proportional to 7,777.89, 10,734.13 and 4,421.76 is: 6,102.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.89 : 10,734.13 = 4,421.76 : x
  2. Step 2: Convert to fraction form
    7,777.89/10,734.13 = 4,421.76/x
  3. Step 3: Cross multiply
    7,777.89x = 10,734.13 × 4,421.76
  4. Step 4: Simplify right side
    7,777.89x = 47,463,752.20
  5. Step 5: Solve for x
    x = 47,463,752.20/7,777.89
  6. Step 6: Final answer
    x = 6,102.39

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Double scale
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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.