Home / 7,811.13-10,779.32-4,274.34

Finding the Fourth Proportional to 7,811.13, 10,779.32 and 4,274.34

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Solution

The fourth proportional to 7,811.13, 10,779.32 and 4,274.34 is: 5,898.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.13 : 10,779.32 = 4,274.34 : x
  2. Step 2: Convert to fraction form
    7,811.13/10,779.32 = 4,274.34/x
  3. Step 3: Cross multiply
    7,811.13x = 10,779.32 × 4,274.34
  4. Step 4: Simplify right side
    7,811.13x = 46,074,448.91
  5. Step 5: Solve for x
    x = 46,074,448.91/7,811.13
  6. Step 6: Final answer
    x = 5,898.56

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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.