Home / 7,972.40-11,002.78-4,615.16

Finding the Fourth Proportional to 7,972.40, 11,002.78 and 4,615.16

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Solution

The fourth proportional to 7,972.40, 11,002.78 and 4,615.16 is: 6,369.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.40 : 11,002.78 = 4,615.16 : x
  2. Step 2: Convert to fraction form
    7,972.40/11,002.78 = 4,615.16/x
  3. Step 3: Cross multiply
    7,972.40x = 11,002.78 × 4,615.16
  4. Step 4: Simplify right side
    7,972.40x = 50,779,590.14
  5. Step 5: Solve for x
    x = 50,779,590.14/7,972.40
  6. Step 6: Final answer
    x = 6,369.42

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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.