Home / 9,365-12,923.76-5,173.40

Finding the Fourth Proportional to 9,365, 12,923.76 and 5,173.40

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Solution

The fourth proportional to 9,365, 12,923.76 and 5,173.40 is: 7,139.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,365 : 12,923.76 = 5,173.40 : x
  2. Step 2: Convert to fraction form
    9,365/12,923.76 = 5,173.40/x
  3. Step 3: Cross multiply
    9,365x = 12,923.76 × 5,173.40
  4. Step 4: Simplify right side
    9,365x = 66,859,779.98
  5. Step 5: Solve for x
    x = 66,859,779.98/9,365
  6. Step 6: Final answer
    x = 7,139.33

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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.