Home / 7,521.38-11,271.72-6,405.02

Finding the Fourth Proportional to 7,521.38, 11,271.72 and 6,405.02

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Solution

The fourth proportional to 7,521.38, 11,271.72 and 6,405.02 is: 9,598.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.38 : 11,271.72 = 6,405.02 : x
  2. Step 2: Convert to fraction form
    7,521.38/11,271.72 = 6,405.02/x
  3. Step 3: Cross multiply
    7,521.38x = 11,271.72 × 6,405.02
  4. Step 4: Simplify right side
    7,521.38x = 72,195,592.03
  5. Step 5: Solve for x
    x = 72,195,592.03/7,521.38
  6. Step 6: Final answer
    x = 9,598.72

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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.