Home / 8,379.29-11,561.35-4,745.40

Finding the Fourth Proportional to 8,379.29, 11,561.35 and 4,745.40

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Solution

The fourth proportional to 8,379.29, 11,561.35 and 4,745.40 is: 6,547.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.29 : 11,561.35 = 4,745.40 : x
  2. Step 2: Convert to fraction form
    8,379.29/11,561.35 = 4,745.40/x
  3. Step 3: Cross multiply
    8,379.29x = 11,561.35 × 4,745.40
  4. Step 4: Simplify right side
    8,379.29x = 54,863,148.76
  5. Step 5: Solve for x
    x = 54,863,148.76/8,379.29
  6. Step 6: Final answer
    x = 6,547.47

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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.