Home / 5,106.68-7,047.74-3,118.40

Finding the Fourth Proportional to 5,106.68, 7,047.74 and 3,118.40

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Solution

The fourth proportional to 5,106.68, 7,047.74 and 3,118.40 is: 4,303.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.68 : 7,047.74 = 3,118.40 : x
  2. Step 2: Convert to fraction form
    5,106.68/7,047.74 = 3,118.40/x
  3. Step 3: Cross multiply
    5,106.68x = 7,047.74 × 3,118.40
  4. Step 4: Simplify right side
    5,106.68x = 21,977,672.42
  5. Step 5: Solve for x
    x = 21,977,672.42/5,106.68
  6. Step 6: Final answer
    x = 4,303.71

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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.