Home / 6,415.81-9,619.56-4,217.87

Finding the Fourth Proportional to 6,415.81, 9,619.56 and 4,217.87

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Solution

The fourth proportional to 6,415.81, 9,619.56 and 4,217.87 is: 6,324.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.81 : 9,619.56 = 4,217.87 : x
  2. Step 2: Convert to fraction form
    6,415.81/9,619.56 = 4,217.87/x
  3. Step 3: Cross multiply
    6,415.81x = 9,619.56 × 4,217.87
  4. Step 4: Simplify right side
    6,415.81x = 40,574,077.59
  5. Step 5: Solve for x
    x = 40,574,077.59/6,415.81
  6. Step 6: Final answer
    x = 6,324.08

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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.