Home / 7,980.16-11,012.82-4,443.16

Finding the Fourth Proportional to 7,980.16, 11,012.82 and 4,443.16

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Solution

The fourth proportional to 7,980.16, 11,012.82 and 4,443.16 is: 6,131.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.16 : 11,012.82 = 4,443.16 : x
  2. Step 2: Convert to fraction form
    7,980.16/11,012.82 = 4,443.16/x
  3. Step 3: Cross multiply
    7,980.16x = 11,012.82 × 4,443.16
  4. Step 4: Simplify right side
    7,980.16x = 48,931,721.31
  5. Step 5: Solve for x
    x = 48,931,721.31/7,980.16
  6. Step 6: Final answer
    x = 6,131.67

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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.