Home / 7,860.18-10,845.18-4,989.72

Finding the Fourth Proportional to 7,860.18, 10,845.18 and 4,989.72

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Solution

The fourth proportional to 7,860.18, 10,845.18 and 4,989.72 is: 6,884.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.18 : 10,845.18 = 4,989.72 : x
  2. Step 2: Convert to fraction form
    7,860.18/10,845.18 = 4,989.72/x
  3. Step 3: Cross multiply
    7,860.18x = 10,845.18 × 4,989.72
  4. Step 4: Simplify right side
    7,860.18x = 54,114,411.55
  5. Step 5: Solve for x
    x = 54,114,411.55/7,860.18
  6. Step 6: Final answer
    x = 6,884.63

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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.