Home / 7,811.10-10,779.18-4,785.75

Finding the Fourth Proportional to 7,811.10, 10,779.18 and 4,785.75

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Solution

The fourth proportional to 7,811.10, 10,779.18 and 4,785.75 is: 6,604.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.10 : 10,779.18 = 4,785.75 : x
  2. Step 2: Convert to fraction form
    7,811.10/10,779.18 = 4,785.75/x
  3. Step 3: Cross multiply
    7,811.10x = 10,779.18 × 4,785.75
  4. Step 4: Simplify right side
    7,811.10x = 51,586,460.69
  5. Step 5: Solve for x
    x = 51,586,460.69/7,811.10
  6. Step 6: Final answer
    x = 6,604.25

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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.