Home / 4,711.20-7,065.90-1,424.40

Finding the Fourth Proportional to 4,711.20, 7,065.90 and 1,424.40

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Solution

The fourth proportional to 4,711.20, 7,065.90 and 1,424.40 is: 2,136.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,711.20 : 7,065.90 = 1,424.40 : x
  2. Step 2: Convert to fraction form
    4,711.20/7,065.90 = 1,424.40/x
  3. Step 3: Cross multiply
    4,711.20x = 7,065.90 × 1,424.40
  4. Step 4: Simplify right side
    4,711.20x = 10,064,667.96
  5. Step 5: Solve for x
    x = 10,064,667.96/4,711.20
  6. Step 6: Final answer
    x = 2,136.33

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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.