Home / 8,702.67-12,011.55-6,810.51

Finding the Fourth Proportional to 8,702.67, 12,011.55 and 6,810.51

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Solution

The fourth proportional to 8,702.67, 12,011.55 and 6,810.51 is: 9,399.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.67 : 12,011.55 = 6,810.51 : x
  2. Step 2: Convert to fraction form
    8,702.67/12,011.55 = 6,810.51/x
  3. Step 3: Cross multiply
    8,702.67x = 12,011.55 × 6,810.51
  4. Step 4: Simplify right side
    8,702.67x = 81,804,781.39
  5. Step 5: Solve for x
    x = 81,804,781.39/8,702.67
  6. Step 6: Final answer
    x = 9,399.96

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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.