Home / 7,077.03-9,765.70-3,890.15

Finding the Fourth Proportional to 7,077.03, 9,765.70 and 3,890.15

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Solution

The fourth proportional to 7,077.03, 9,765.70 and 3,890.15 is: 5,368.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.03 : 9,765.70 = 3,890.15 : x
  2. Step 2: Convert to fraction form
    7,077.03/9,765.70 = 3,890.15/x
  3. Step 3: Cross multiply
    7,077.03x = 9,765.70 × 3,890.15
  4. Step 4: Simplify right side
    7,077.03x = 37,990,037.86
  5. Step 5: Solve for x
    x = 37,990,037.86/7,077.03
  6. Step 6: Final answer
    x = 5,368.08

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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.