Home / 6,420.04-8,859.38-3,587.36

Finding the Fourth Proportional to 6,420.04, 8,859.38 and 3,587.36

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Solution

The fourth proportional to 6,420.04, 8,859.38 and 3,587.36 is: 4,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.04 : 8,859.38 = 3,587.36 : x
  2. Step 2: Convert to fraction form
    6,420.04/8,859.38 = 3,587.36/x
  3. Step 3: Cross multiply
    6,420.04x = 8,859.38 × 3,587.36
  4. Step 4: Simplify right side
    6,420.04x = 31,781,785.44
  5. Step 5: Solve for x
    x = 31,781,785.44/6,420.04
  6. Step 6: Final answer
    x = 4,950.40

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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.