Home / 7,111.84-9,814.08-3,925.18

Finding the Fourth Proportional to 7,111.84, 9,814.08 and 3,925.18

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Solution

The fourth proportional to 7,111.84, 9,814.08 and 3,925.18 is: 5,416.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.84 : 9,814.08 = 3,925.18 : x
  2. Step 2: Convert to fraction form
    7,111.84/9,814.08 = 3,925.18/x
  3. Step 3: Cross multiply
    7,111.84x = 9,814.08 × 3,925.18
  4. Step 4: Simplify right side
    7,111.84x = 38,522,030.53
  5. Step 5: Solve for x
    x = 38,522,030.53/7,111.84
  6. Step 6: Final answer
    x = 5,416.61

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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.