Home / 6,519.13-9,780.51-2,139.67

Finding the Fourth Proportional to 6,519.13, 9,780.51 and 2,139.67

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Solution

The fourth proportional to 6,519.13, 9,780.51 and 2,139.67 is: 3,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,519.13 : 9,780.51 = 2,139.67 : x
  2. Step 2: Convert to fraction form
    6,519.13/9,780.51 = 2,139.67/x
  3. Step 3: Cross multiply
    6,519.13x = 9,780.51 × 2,139.67
  4. Step 4: Simplify right side
    6,519.13x = 20,927,063.83
  5. Step 5: Solve for x
    x = 20,927,063.83/6,519.13
  6. Step 6: Final answer
    x = 3,210.10

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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.