Home / 8,395.29-12,588.64-3,130.09

Finding the Fourth Proportional to 8,395.29, 12,588.64 and 3,130.09

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Solution

The fourth proportional to 8,395.29, 12,588.64 and 3,130.09 is: 4,693.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,395.29 : 12,588.64 = 3,130.09 : x
  2. Step 2: Convert to fraction form
    8,395.29/12,588.64 = 3,130.09/x
  3. Step 3: Cross multiply
    8,395.29x = 12,588.64 × 3,130.09
  4. Step 4: Simplify right side
    8,395.29x = 39,403,576.18
  5. Step 5: Solve for x
    x = 39,403,576.18/8,395.29
  6. Step 6: Final answer
    x = 4,693.53

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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.