Home / 6,111.60-9,157.80-5,132.40

Finding the Fourth Proportional to 6,111.60, 9,157.80 and 5,132.40

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Solution

The fourth proportional to 6,111.60, 9,157.80 and 5,132.40 is: 7,690.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,111.60 : 9,157.80 = 5,132.40 : x
  2. Step 2: Convert to fraction form
    6,111.60/9,157.80 = 5,132.40/x
  3. Step 3: Cross multiply
    6,111.60x = 9,157.80 × 5,132.40
  4. Step 4: Simplify right side
    6,111.60x = 47,001,492.72
  5. Step 5: Solve for x
    x = 47,001,492.72/6,111.60
  6. Step 6: Final answer
    x = 7,690.54

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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.