Home / 8,985.54-12,398.40-6,827.70

Finding the Fourth Proportional to 8,985.54, 12,398.40 and 6,827.70

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Solution

The fourth proportional to 8,985.54, 12,398.40 and 6,827.70 is: 9,420.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.54 : 12,398.40 = 6,827.70 : x
  2. Step 2: Convert to fraction form
    8,985.54/12,398.40 = 6,827.70/x
  3. Step 3: Cross multiply
    8,985.54x = 12,398.40 × 6,827.70
  4. Step 4: Simplify right side
    8,985.54x = 84,652,555.68
  5. Step 5: Solve for x
    x = 84,652,555.68/8,985.54
  6. Step 6: Final answer
    x = 9,420.98

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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.