Home / 8,685.83-11,985.72-4,909.32

Finding the Fourth Proportional to 8,685.83, 11,985.72 and 4,909.32

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Solution

The fourth proportional to 8,685.83, 11,985.72 and 4,909.32 is: 6,774.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.83 : 11,985.72 = 4,909.32 : x
  2. Step 2: Convert to fraction form
    8,685.83/11,985.72 = 4,909.32/x
  3. Step 3: Cross multiply
    8,685.83x = 11,985.72 × 4,909.32
  4. Step 4: Simplify right side
    8,685.83x = 58,841,734.91
  5. Step 5: Solve for x
    x = 58,841,734.91/8,685.83
  6. Step 6: Final answer
    x = 6,774.46

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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.