Home / 1,385.10-2,075.22-837.54

Finding the Fourth Proportional to 1,385.10, 2,075.22 and 837.54

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Solution

The fourth proportional to 1,385.10, 2,075.22 and 837.54 is: 1,254.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.10 : 2,075.22 = 837.54 : x
  2. Step 2: Convert to fraction form
    1,385.10/2,075.22 = 837.54/x
  3. Step 3: Cross multiply
    1,385.10x = 2,075.22 × 837.54
  4. Step 4: Simplify right side
    1,385.10x = 1,738,079.76
  5. Step 5: Solve for x
    x = 1,738,079.76/1,385.10
  6. Step 6: Final answer
    x = 1,254.84

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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.