Home / 7,784.30-10,742.96-4,428.14

Finding the Fourth Proportional to 7,784.30, 10,742.96 and 4,428.14

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Solution

The fourth proportional to 7,784.30, 10,742.96 and 4,428.14 is: 6,111.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.30 : 10,742.96 = 4,428.14 : x
  2. Step 2: Convert to fraction form
    7,784.30/10,742.96 = 4,428.14/x
  3. Step 3: Cross multiply
    7,784.30x = 10,742.96 × 4,428.14
  4. Step 4: Simplify right side
    7,784.30x = 47,571,288.25
  5. Step 5: Solve for x
    x = 47,571,288.25/7,784.30
  6. Step 6: Final answer
    x = 6,111.18

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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.