Home / 7,130.84-10,691.39-3,431.16

Finding the Fourth Proportional to 7,130.84, 10,691.39 and 3,431.16

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Solution

The fourth proportional to 7,130.84, 10,691.39 and 3,431.16 is: 5,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.84 : 10,691.39 = 3,431.16 : x
  2. Step 2: Convert to fraction form
    7,130.84/10,691.39 = 3,431.16/x
  3. Step 3: Cross multiply
    7,130.84x = 10,691.39 × 3,431.16
  4. Step 4: Simplify right side
    7,130.84x = 36,683,878.29
  5. Step 5: Solve for x
    x = 36,683,878.29/7,130.84
  6. Step 6: Final answer
    x = 5,144.40

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1.5x scale

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.