Home / 7,875.48-11,815.95-6,553.03

Finding the Fourth Proportional to 7,875.48, 11,815.95 and 6,553.03

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Solution

The fourth proportional to 7,875.48, 11,815.95 and 6,553.03 is: 9,831.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.48 : 11,815.95 = 6,553.03 : x
  2. Step 2: Convert to fraction form
    7,875.48/11,815.95 = 6,553.03/x
  3. Step 3: Cross multiply
    7,875.48x = 11,815.95 × 6,553.03
  4. Step 4: Simplify right side
    7,875.48x = 77,430,240.35
  5. Step 5: Solve for x
    x = 77,430,240.35/7,875.48
  6. Step 6: Final answer
    x = 9,831.81

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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.