Home / 8,421.34-11,621.57-4,885.62

Finding the Fourth Proportional to 8,421.34, 11,621.57 and 4,885.62

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Solution

The fourth proportional to 8,421.34, 11,621.57 and 4,885.62 is: 6,742.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.34 : 11,621.57 = 4,885.62 : x
  2. Step 2: Convert to fraction form
    8,421.34/11,621.57 = 4,885.62/x
  3. Step 3: Cross multiply
    8,421.34x = 11,621.57 × 4,885.62
  4. Step 4: Simplify right side
    8,421.34x = 56,778,574.82
  5. Step 5: Solve for x
    x = 56,778,574.82/8,421.34
  6. Step 6: Final answer
    x = 6,742.23

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Half scale
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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.