Home / 4,778.40-7,168.81-1,491.52

Finding the Fourth Proportional to 4,778.40, 7,168.81 and 1,491.52

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Solution

The fourth proportional to 4,778.40, 7,168.81 and 1,491.52 is: 2,237.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.40 : 7,168.81 = 1,491.52 : x
  2. Step 2: Convert to fraction form
    4,778.40/7,168.81 = 1,491.52/x
  3. Step 3: Cross multiply
    4,778.40x = 7,168.81 × 1,491.52
  4. Step 4: Simplify right side
    4,778.40x = 10,692,423.49
  5. Step 5: Solve for x
    x = 10,692,423.49/4,778.40
  6. Step 6: Final answer
    x = 2,237.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.