Home / 9,157.06-12,637.02-5,178.08

Finding the Fourth Proportional to 9,157.06, 12,637.02 and 5,178.08

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Solution

The fourth proportional to 9,157.06, 12,637.02 and 5,178.08 is: 7,145.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,157.06 : 12,637.02 = 5,178.08 : x
  2. Step 2: Convert to fraction form
    9,157.06/12,637.02 = 5,178.08/x
  3. Step 3: Cross multiply
    9,157.06x = 12,637.02 × 5,178.08
  4. Step 4: Simplify right side
    9,157.06x = 65,435,500.52
  5. Step 5: Solve for x
    x = 65,435,500.52/9,157.06
  6. Step 6: Final answer
    x = 7,145.91

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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.