Home / 8,931.72-13,378.08-4,305

Finding the Fourth Proportional to 8,931.72, 13,378.08 and 4,305

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Solution

The fourth proportional to 8,931.72, 13,378.08 and 4,305 is: 6,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.72 : 13,378.08 = 4,305 : x
  2. Step 2: Convert to fraction form
    8,931.72/13,378.08 = 4,305/x
  3. Step 3: Cross multiply
    8,931.72x = 13,378.08 × 4,305
  4. Step 4: Simplify right side
    8,931.72x = 57,592,634.40
  5. Step 5: Solve for x
    x = 57,592,634.40/8,931.72
  6. Step 6: Final answer
    x = 6,448.10

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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.