Home / 6,415.02-8,776.44-6,387.30

Finding the Fourth Proportional to 6,415.02, 8,776.44 and 6,387.30

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Solution

The fourth proportional to 6,415.02, 8,776.44 and 6,387.30 is: 8,738.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.02 : 8,776.44 = 6,387.30 : x
  2. Step 2: Convert to fraction form
    6,415.02/8,776.44 = 6,387.30/x
  3. Step 3: Cross multiply
    6,415.02x = 8,776.44 × 6,387.30
  4. Step 4: Simplify right side
    6,415.02x = 56,057,755.21
  5. Step 5: Solve for x
    x = 56,057,755.21/6,415.02
  6. Step 6: Final answer
    x = 8,738.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.