Home / 7,314.40-10,971.55-2,931.80

Finding the Fourth Proportional to 7,314.40, 10,971.55 and 2,931.80

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Solution

The fourth proportional to 7,314.40, 10,971.55 and 2,931.80 is: 4,397.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,314.40 : 10,971.55 = 2,931.80 : x
  2. Step 2: Convert to fraction form
    7,314.40/10,971.55 = 2,931.80/x
  3. Step 3: Cross multiply
    7,314.40x = 10,971.55 × 2,931.80
  4. Step 4: Simplify right side
    7,314.40x = 32,166,339.10
  5. Step 5: Solve for x
    x = 32,166,339.10/7,314.40
  6. Step 6: Final answer
    x = 4,397.67

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.