Home / 5,378.06-8,070.77-1,915.31

Finding the Fourth Proportional to 5,378.06, 8,070.77 and 1,915.31

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Solution

The fourth proportional to 5,378.06, 8,070.77 and 1,915.31 is: 2,874.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.06 : 8,070.77 = 1,915.31 : x
  2. Step 2: Convert to fraction form
    5,378.06/8,070.77 = 1,915.31/x
  3. Step 3: Cross multiply
    5,378.06x = 8,070.77 × 1,915.31
  4. Step 4: Simplify right side
    5,378.06x = 15,458,051.45
  5. Step 5: Solve for x
    x = 15,458,051.45/5,378.06
  6. Step 6: Final answer
    x = 2,874.28

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1.5x scale

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.