Home / 7,756.40-10,703.76-4,219.52

Finding the Fourth Proportional to 7,756.40, 10,703.76 and 4,219.52

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Solution

The fourth proportional to 7,756.40, 10,703.76 and 4,219.52 is: 5,822.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,756.40 : 10,703.76 = 4,219.52 : x
  2. Step 2: Convert to fraction form
    7,756.40/10,703.76 = 4,219.52/x
  3. Step 3: Cross multiply
    7,756.40x = 10,703.76 × 4,219.52
  4. Step 4: Simplify right side
    7,756.40x = 45,164,729.40
  5. Step 5: Solve for x
    x = 45,164,729.40/7,756.40
  6. Step 6: Final answer
    x = 5,822.90

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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.