Home / 8,345.21-11,515.60-4,987.35

Finding the Fourth Proportional to 8,345.21, 11,515.60 and 4,987.35

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Solution

The fourth proportional to 8,345.21, 11,515.60 and 4,987.35 is: 6,882.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.21 : 11,515.60 = 4,987.35 : x
  2. Step 2: Convert to fraction form
    8,345.21/11,515.60 = 4,987.35/x
  3. Step 3: Cross multiply
    8,345.21x = 11,515.60 × 4,987.35
  4. Step 4: Simplify right side
    8,345.21x = 57,432,333.89
  5. Step 5: Solve for x
    x = 57,432,333.89/8,345.21
  6. Step 6: Final answer
    x = 6,882.08

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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.