Home / 7,215.34-9,954.90-5,698.12

Finding the Fourth Proportional to 7,215.34, 9,954.90 and 5,698.12

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Solution

The fourth proportional to 7,215.34, 9,954.90 and 5,698.12 is: 7,861.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.34 : 9,954.90 = 5,698.12 : x
  2. Step 2: Convert to fraction form
    7,215.34/9,954.90 = 5,698.12/x
  3. Step 3: Cross multiply
    7,215.34x = 9,954.90 × 5,698.12
  4. Step 4: Simplify right side
    7,215.34x = 56,724,214.79
  5. Step 5: Solve for x
    x = 56,724,214.79/7,215.34
  6. Step 6: Final answer
    x = 7,861.61

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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.