Home / 7,780.50-10,737.09-4,986

Finding the Fourth Proportional to 7,780.50, 10,737.09 and 4,986

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Solution

The fourth proportional to 7,780.50, 10,737.09 and 4,986 is: 6,880.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.50 : 10,737.09 = 4,986 : x
  2. Step 2: Convert to fraction form
    7,780.50/10,737.09 = 4,986/x
  3. Step 3: Cross multiply
    7,780.50x = 10,737.09 × 4,986
  4. Step 4: Simplify right side
    7,780.50x = 53,535,130.74
  5. Step 5: Solve for x
    x = 53,535,130.74/7,780.50
  6. Step 6: Final answer
    x = 6,880.68

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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.