Home / 7,778.84-10,722.28-5,260.16

Finding the Fourth Proportional to 7,778.84, 10,722.28 and 5,260.16

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Solution

The fourth proportional to 7,778.84, 10,722.28 and 5,260.16 is: 7,250.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.84 : 10,722.28 = 5,260.16 : x
  2. Step 2: Convert to fraction form
    7,778.84/10,722.28 = 5,260.16/x
  3. Step 3: Cross multiply
    7,778.84x = 10,722.28 × 5,260.16
  4. Step 4: Simplify right side
    7,778.84x = 56,400,908.36
  5. Step 5: Solve for x
    x = 56,400,908.36/7,778.84
  6. Step 6: Final answer
    x = 7,250.56

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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.