Home / 8,386.13-12,587.40-5,105.63

Finding the Fourth Proportional to 8,386.13, 12,587.40 and 5,105.63

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Solution

The fourth proportional to 8,386.13, 12,587.40 and 5,105.63 is: 7,663.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.13 : 12,587.40 = 5,105.63 : x
  2. Step 2: Convert to fraction form
    8,386.13/12,587.40 = 5,105.63/x
  3. Step 3: Cross multiply
    8,386.13x = 12,587.40 × 5,105.63
  4. Step 4: Simplify right side
    8,386.13x = 64,266,638.53
  5. Step 5: Solve for x
    x = 64,266,638.53/8,386.13
  6. Step 6: Final answer
    x = 7,663.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.