Home / 7,111.74-9,814.79-3,925.32

Finding the Fourth Proportional to 7,111.74, 9,814.79 and 3,925.32

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Solution

The fourth proportional to 7,111.74, 9,814.79 and 3,925.32 is: 5,417.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.74 : 9,814.79 = 3,925.32 : x
  2. Step 2: Convert to fraction form
    7,111.74/9,814.79 = 3,925.32/x
  3. Step 3: Cross multiply
    7,111.74x = 9,814.79 × 3,925.32
  4. Step 4: Simplify right side
    7,111.74x = 38,526,219.70
  5. Step 5: Solve for x
    x = 38,526,219.70/7,111.74
  6. Step 6: Final answer
    x = 5,417.27

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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.