Home / 5,317.45-7,975.84-1,985.05

Finding the Fourth Proportional to 5,317.45, 7,975.84 and 1,985.05

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Solution

The fourth proportional to 5,317.45, 7,975.84 and 1,985.05 is: 2,977.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.45 : 7,975.84 = 1,985.05 : x
  2. Step 2: Convert to fraction form
    5,317.45/7,975.84 = 1,985.05/x
  3. Step 3: Cross multiply
    5,317.45x = 7,975.84 × 1,985.05
  4. Step 4: Simplify right side
    5,317.45x = 15,832,441.19
  5. Step 5: Solve for x
    x = 15,832,441.19/5,317.45
  6. Step 6: Final answer
    x = 2,977.45

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Double scale
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Similar ratio
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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.