Home / 8,315.29-11,477.49-4,915.45

Finding the Fourth Proportional to 8,315.29, 11,477.49 and 4,915.45

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Solution

The fourth proportional to 8,315.29, 11,477.49 and 4,915.45 is: 6,784.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.29 : 11,477.49 = 4,915.45 : x
  2. Step 2: Convert to fraction form
    8,315.29/11,477.49 = 4,915.45/x
  3. Step 3: Cross multiply
    8,315.29x = 11,477.49 × 4,915.45
  4. Step 4: Simplify right side
    8,315.29x = 56,417,028.22
  5. Step 5: Solve for x
    x = 56,417,028.22/8,315.29
  6. Step 6: Final answer
    x = 6,784.73

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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.