Home / 5,381.16-8,070.36-1,917.60

Finding the Fourth Proportional to 5,381.16, 8,070.36 and 1,917.60

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Solution

The fourth proportional to 5,381.16, 8,070.36 and 1,917.60 is: 2,875.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.16 : 8,070.36 = 1,917.60 : x
  2. Step 2: Convert to fraction form
    5,381.16/8,070.36 = 1,917.60/x
  3. Step 3: Cross multiply
    5,381.16x = 8,070.36 × 1,917.60
  4. Step 4: Simplify right side
    5,381.16x = 15,475,722.34
  5. Step 5: Solve for x
    x = 15,475,722.34/5,381.16
  6. Step 6: Final answer
    x = 2,875.91

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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.