Home / 8,742.28-12,064.58-5,207.40

Finding the Fourth Proportional to 8,742.28, 12,064.58 and 5,207.40

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Solution

The fourth proportional to 8,742.28, 12,064.58 and 5,207.40 is: 7,186.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.28 : 12,064.58 = 5,207.40 : x
  2. Step 2: Convert to fraction form
    8,742.28/12,064.58 = 5,207.40/x
  3. Step 3: Cross multiply
    8,742.28x = 12,064.58 × 5,207.40
  4. Step 4: Simplify right side
    8,742.28x = 62,825,093.89
  5. Step 5: Solve for x
    x = 62,825,093.89/8,742.28
  6. Step 6: Final answer
    x = 7,186.35

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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.