Home / 8,320.32-11,485.40-5,670.41

Finding the Fourth Proportional to 8,320.32, 11,485.40 and 5,670.41

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Solution

The fourth proportional to 8,320.32, 11,485.40 and 5,670.41 is: 7,827.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.32 : 11,485.40 = 5,670.41 : x
  2. Step 2: Convert to fraction form
    8,320.32/11,485.40 = 5,670.41/x
  3. Step 3: Cross multiply
    8,320.32x = 11,485.40 × 5,670.41
  4. Step 4: Simplify right side
    8,320.32x = 65,126,841.23
  5. Step 5: Solve for x
    x = 65,126,841.23/8,320.32
  6. Step 6: Final answer
    x = 7,827.44

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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.