Home / 7,756.21-10,703.55-4,219.48

Finding the Fourth Proportional to 7,756.21, 10,703.55 and 4,219.48

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Solution

The fourth proportional to 7,756.21, 10,703.55 and 4,219.48 is: 5,822.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,756.21 : 10,703.55 = 4,219.48 : x
  2. Step 2: Convert to fraction form
    7,756.21/10,703.55 = 4,219.48/x
  3. Step 3: Cross multiply
    7,756.21x = 10,703.55 × 4,219.48
  4. Step 4: Simplify right side
    7,756.21x = 45,163,415.15
  5. Step 5: Solve for x
    x = 45,163,415.15/7,756.21
  6. Step 6: Final answer
    x = 5,822.87

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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.