Home / 8,415.63-11,612.57-4,878.36

Finding the Fourth Proportional to 8,415.63, 11,612.57 and 4,878.36

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Solution

The fourth proportional to 8,415.63, 11,612.57 and 4,878.36 is: 6,731.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.63 : 11,612.57 = 4,878.36 : x
  2. Step 2: Convert to fraction form
    8,415.63/11,612.57 = 4,878.36/x
  3. Step 3: Cross multiply
    8,415.63x = 11,612.57 × 4,878.36
  4. Step 4: Simplify right side
    8,415.63x = 56,650,272.59
  5. Step 5: Solve for x
    x = 56,650,272.59/8,415.63
  6. Step 6: Final answer
    x = 6,731.55

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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.