Home / 7,456.23-11,178.74-6,428.34

Finding the Fourth Proportional to 7,456.23, 11,178.74 and 6,428.34

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Solution

The fourth proportional to 7,456.23, 11,178.74 and 6,428.34 is: 9,637.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,456.23 : 11,178.74 = 6,428.34 : x
  2. Step 2: Convert to fraction form
    7,456.23/11,178.74 = 6,428.34/x
  3. Step 3: Cross multiply
    7,456.23x = 11,178.74 × 6,428.34
  4. Step 4: Simplify right side
    7,456.23x = 71,860,709.35
  5. Step 5: Solve for x
    x = 71,860,709.35/7,456.23
  6. Step 6: Final answer
    x = 9,637.67

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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.