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Finding the Fourth Proportional to 4,987.51, 6,885.26 and 3,865.93

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Solution

The fourth proportional to 4,987.51, 6,885.26 and 3,865.93 is: 5,336.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.51 : 6,885.26 = 3,865.93 : x
  2. Step 2: Convert to fraction form
    4,987.51/6,885.26 = 3,865.93/x
  3. Step 3: Cross multiply
    4,987.51x = 6,885.26 × 3,865.93
  4. Step 4: Simplify right side
    4,987.51x = 26,617,933.19
  5. Step 5: Solve for x
    x = 26,617,933.19/4,987.51
  6. Step 6: Final answer
    x = 5,336.92

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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.