Home / 5,318.10-7,975.35-1,985.66

Finding the Fourth Proportional to 5,318.10, 7,975.35 and 1,985.66

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Solution

The fourth proportional to 5,318.10, 7,975.35 and 1,985.66 is: 2,977.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.10 : 7,975.35 = 1,985.66 : x
  2. Step 2: Convert to fraction form
    5,318.10/7,975.35 = 1,985.66/x
  3. Step 3: Cross multiply
    5,318.10x = 7,975.35 × 1,985.66
  4. Step 4: Simplify right side
    5,318.10x = 15,836,323.51
  5. Step 5: Solve for x
    x = 15,836,323.51/5,318.10
  6. Step 6: Final answer
    x = 2,977.82

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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.