Home / 8,945.48-12,345.53-5,168.81

Finding the Fourth Proportional to 8,945.48, 12,345.53 and 5,168.81

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Solution

The fourth proportional to 8,945.48, 12,345.53 and 5,168.81 is: 7,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945.48 : 12,345.53 = 5,168.81 : x
  2. Step 2: Convert to fraction form
    8,945.48/12,345.53 = 5,168.81/x
  3. Step 3: Cross multiply
    8,945.48x = 12,345.53 × 5,168.81
  4. Step 4: Simplify right side
    8,945.48x = 63,811,703.94
  5. Step 5: Solve for x
    x = 63,811,703.94/8,945.48
  6. Step 6: Final answer
    x = 7,133.40

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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.