Home / 6,386.48-8,807.40-4,145.96

Finding the Fourth Proportional to 6,386.48, 8,807.40 and 4,145.96

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Solution

The fourth proportional to 6,386.48, 8,807.40 and 4,145.96 is: 5,717.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.48 : 8,807.40 = 4,145.96 : x
  2. Step 2: Convert to fraction form
    6,386.48/8,807.40 = 4,145.96/x
  3. Step 3: Cross multiply
    6,386.48x = 8,807.40 × 4,145.96
  4. Step 4: Simplify right side
    6,386.48x = 36,515,128.10
  5. Step 5: Solve for x
    x = 36,515,128.10/6,386.48
  6. Step 6: Final answer
    x = 5,717.57

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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.