Home / 6,439.84-8,887.54-3,607.17

Finding the Fourth Proportional to 6,439.84, 8,887.54 and 3,607.17

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Solution

The fourth proportional to 6,439.84, 8,887.54 and 3,607.17 is: 4,978.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.84 : 8,887.54 = 3,607.17 : x
  2. Step 2: Convert to fraction form
    6,439.84/8,887.54 = 3,607.17/x
  3. Step 3: Cross multiply
    6,439.84x = 8,887.54 × 3,607.17
  4. Step 4: Simplify right side
    6,439.84x = 32,058,832.08
  5. Step 5: Solve for x
    x = 32,058,832.08/6,439.84
  6. Step 6: Final answer
    x = 4,978.21

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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.