Home / 2,742.21-4,089.51-2,646.54

Finding the Fourth Proportional to 2,742.21, 4,089.51 and 2,646.54

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Solution

The fourth proportional to 2,742.21, 4,089.51 and 2,646.54 is: 3,946.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.21 : 4,089.51 = 2,646.54 : x
  2. Step 2: Convert to fraction form
    2,742.21/4,089.51 = 2,646.54/x
  3. Step 3: Cross multiply
    2,742.21x = 4,089.51 × 2,646.54
  4. Step 4: Simplify right side
    2,742.21x = 10,823,051.80
  5. Step 5: Solve for x
    x = 10,823,051.80/2,742.21
  6. Step 6: Final answer
    x = 3,946.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.