Home / 7,890.80-11,837.64-4,555.76

Finding the Fourth Proportional to 7,890.80, 11,837.64 and 4,555.76

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Solution

The fourth proportional to 7,890.80, 11,837.64 and 4,555.76 is: 6,834.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.80 : 11,837.64 = 4,555.76 : x
  2. Step 2: Convert to fraction form
    7,890.80/11,837.64 = 4,555.76/x
  3. Step 3: Cross multiply
    7,890.80x = 11,837.64 × 4,555.76
  4. Step 4: Simplify right side
    7,890.80x = 53,929,446.81
  5. Step 5: Solve for x
    x = 53,929,446.81/7,890.80
  6. Step 6: Final answer
    x = 6,834.47

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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.