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Finding the Fourth Proportional to 5,368.83, 7,405.58 and 3,878.93

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Solution

The fourth proportional to 5,368.83, 7,405.58 and 3,878.93 is: 5,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,368.83 : 7,405.58 = 3,878.93 : x
  2. Step 2: Convert to fraction form
    5,368.83/7,405.58 = 3,878.93/x
  3. Step 3: Cross multiply
    5,368.83x = 7,405.58 × 3,878.93
  4. Step 4: Simplify right side
    5,368.83x = 28,725,670.01
  5. Step 5: Solve for x
    x = 28,725,670.01/5,368.83
  6. Step 6: Final answer
    x = 5,350.45

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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.