Home / 7,581.36-11,368.98-3,421.20

Finding the Fourth Proportional to 7,581.36, 11,368.98 and 3,421.20

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Solution

The fourth proportional to 7,581.36, 11,368.98 and 3,421.20 is: 5,130.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,581.36 : 11,368.98 = 3,421.20 : x
  2. Step 2: Convert to fraction form
    7,581.36/11,368.98 = 3,421.20/x
  3. Step 3: Cross multiply
    7,581.36x = 11,368.98 × 3,421.20
  4. Step 4: Simplify right side
    7,581.36x = 38,895,554.38
  5. Step 5: Solve for x
    x = 38,895,554.38/7,581.36
  6. Step 6: Final answer
    x = 5,130.42

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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.