Home / 3,438.15-5,157.07-972.91

Finding the Fourth Proportional to 3,438.15, 5,157.07 and 972.91

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Solution

The fourth proportional to 3,438.15, 5,157.07 and 972.91 is: 1,459.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.15 : 5,157.07 = 972.91 : x
  2. Step 2: Convert to fraction form
    3,438.15/5,157.07 = 972.91/x
  3. Step 3: Cross multiply
    3,438.15x = 5,157.07 × 972.91
  4. Step 4: Simplify right side
    3,438.15x = 5,017,368.99
  5. Step 5: Solve for x
    x = 5,017,368.99/3,438.15
  6. Step 6: Final answer
    x = 1,459.32

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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.