Home / 7,421.74-11,136.93-2,805.10

Finding the Fourth Proportional to 7,421.74, 11,136.93 and 2,805.10

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Solution

The fourth proportional to 7,421.74, 11,136.93 and 2,805.10 is: 4,209.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.74 : 11,136.93 = 2,805.10 : x
  2. Step 2: Convert to fraction form
    7,421.74/11,136.93 = 2,805.10/x
  3. Step 3: Cross multiply
    7,421.74x = 11,136.93 × 2,805.10
  4. Step 4: Simplify right side
    7,421.74x = 31,240,202.34
  5. Step 5: Solve for x
    x = 31,240,202.34/7,421.74
  6. Step 6: Final answer
    x = 4,209.28

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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.