Home / 6,415.04-9,619.32-3,123.20

Finding the Fourth Proportional to 6,415.04, 9,619.32 and 3,123.20

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Solution

The fourth proportional to 6,415.04, 9,619.32 and 3,123.20 is: 4,683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.04 : 9,619.32 = 3,123.20 : x
  2. Step 2: Convert to fraction form
    6,415.04/9,619.32 = 3,123.20/x
  3. Step 3: Cross multiply
    6,415.04x = 9,619.32 × 3,123.20
  4. Step 4: Simplify right side
    6,415.04x = 30,043,060.22
  5. Step 5: Solve for x
    x = 30,043,060.22/6,415.04
  6. Step 6: Final answer
    x = 4,683.22

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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.