Home / 5,128.07-7,075.11-3,137.63

Finding the Fourth Proportional to 5,128.07, 7,075.11 and 3,137.63

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Solution

The fourth proportional to 5,128.07, 7,075.11 and 3,137.63 is: 4,328.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.07 : 7,075.11 = 3,137.63 : x
  2. Step 2: Convert to fraction form
    5,128.07/7,075.11 = 3,137.63/x
  3. Step 3: Cross multiply
    5,128.07x = 7,075.11 × 3,137.63
  4. Step 4: Simplify right side
    5,128.07x = 22,199,026.33
  5. Step 5: Solve for x
    x = 22,199,026.33/5,128.07
  6. Step 6: Final answer
    x = 4,328.93

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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.