Home / 6,431.72-8,875.86-3,637.28

Finding the Fourth Proportional to 6,431.72, 8,875.86 and 3,637.28

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Solution

The fourth proportional to 6,431.72, 8,875.86 and 3,637.28 is: 5,019.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.72 : 8,875.86 = 3,637.28 : x
  2. Step 2: Convert to fraction form
    6,431.72/8,875.86 = 3,637.28/x
  3. Step 3: Cross multiply
    6,431.72x = 8,875.86 × 3,637.28
  4. Step 4: Simplify right side
    6,431.72x = 32,283,988.06
  5. Step 5: Solve for x
    x = 32,283,988.06/6,431.72
  6. Step 6: Final answer
    x = 5,019.50

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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.