Home / 10,487.95-15,730.62-2,991.67

Finding the Fourth Proportional to 10,487.95, 15,730.62 and 2,991.67

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Solution

The fourth proportional to 10,487.95, 15,730.62 and 2,991.67 is: 4,487.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.95 : 15,730.62 = 2,991.67 : x
  2. Step 2: Convert to fraction form
    10,487.95/15,730.62 = 2,991.67/x
  3. Step 3: Cross multiply
    10,487.95x = 15,730.62 × 2,991.67
  4. Step 4: Simplify right side
    10,487.95x = 47,060,823.94
  5. Step 5: Solve for x
    x = 47,060,823.94/10,487.95
  6. Step 6: Final answer
    x = 4,487.13

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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.