Home / 7,784.75-10,743.86-4,428.07

Finding the Fourth Proportional to 7,784.75, 10,743.86 and 4,428.07

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Solution

The fourth proportional to 7,784.75, 10,743.86 and 4,428.07 is: 6,111.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.75 : 10,743.86 = 4,428.07 : x
  2. Step 2: Convert to fraction form
    7,784.75/10,743.86 = 4,428.07/x
  3. Step 3: Cross multiply
    7,784.75x = 10,743.86 × 4,428.07
  4. Step 4: Simplify right side
    7,784.75x = 47,574,564.15
  5. Step 5: Solve for x
    x = 47,574,564.15/7,784.75
  6. Step 6: Final answer
    x = 6,111.25

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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.