Home / 1,542.12-2,125.05-1,075.56

Finding the Fourth Proportional to 1,542.12, 2,125.05 and 1,075.56

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Solution

The fourth proportional to 1,542.12, 2,125.05 and 1,075.56 is: 1,482.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.12 : 2,125.05 = 1,075.56 : x
  2. Step 2: Convert to fraction form
    1,542.12/2,125.05 = 1,075.56/x
  3. Step 3: Cross multiply
    1,542.12x = 2,125.05 × 1,075.56
  4. Step 4: Simplify right side
    1,542.12x = 2,285,618.78
  5. Step 5: Solve for x
    x = 2,285,618.78/1,542.12
  6. Step 6: Final answer
    x = 1,482.13

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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.