Home / 4,742.78-7,117.24-2,145.74

Finding the Fourth Proportional to 4,742.78, 7,117.24 and 2,145.74

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Solution

The fourth proportional to 4,742.78, 7,117.24 and 2,145.74 is: 3,220.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.78 : 7,117.24 = 2,145.74 : x
  2. Step 2: Convert to fraction form
    4,742.78/7,117.24 = 2,145.74/x
  3. Step 3: Cross multiply
    4,742.78x = 7,117.24 × 2,145.74
  4. Step 4: Simplify right side
    4,742.78x = 15,271,746.56
  5. Step 5: Solve for x
    x = 15,271,746.56/4,742.78
  6. Step 6: Final answer
    x = 3,220.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.