Home / 7,740.87-10,686.33-4,911.13

Finding the Fourth Proportional to 7,740.87, 10,686.33 and 4,911.13

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Solution

The fourth proportional to 7,740.87, 10,686.33 and 4,911.13 is: 6,779.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.87 : 10,686.33 = 4,911.13 : x
  2. Step 2: Convert to fraction form
    7,740.87/10,686.33 = 4,911.13/x
  3. Step 3: Cross multiply
    7,740.87x = 10,686.33 × 4,911.13
  4. Step 4: Simplify right side
    7,740.87x = 52,481,969.21
  5. Step 5: Solve for x
    x = 52,481,969.21/7,740.87
  6. Step 6: Final answer
    x = 6,779.86

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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.