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Finding the Fourth Proportional to 8,345.89, 11,510.80 and 5,361.99

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Solution

The fourth proportional to 8,345.89, 11,510.80 and 5,361.99 is: 7,395.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.89 : 11,510.80 = 5,361.99 : x
  2. Step 2: Convert to fraction form
    8,345.89/11,510.80 = 5,361.99/x
  3. Step 3: Cross multiply
    8,345.89x = 11,510.80 × 5,361.99
  4. Step 4: Simplify right side
    8,345.89x = 61,720,794.49
  5. Step 5: Solve for x
    x = 61,720,794.49/8,345.89
  6. Step 6: Final answer
    x = 7,395.35

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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.