Home / 2,230.07-3,075.98-1,390.91

Finding the Fourth Proportional to 2,230.07, 3,075.98 and 1,390.91

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Solution

The fourth proportional to 2,230.07, 3,075.98 and 1,390.91 is: 1,918.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.07 : 3,075.98 = 1,390.91 : x
  2. Step 2: Convert to fraction form
    2,230.07/3,075.98 = 1,390.91/x
  3. Step 3: Cross multiply
    2,230.07x = 3,075.98 × 1,390.91
  4. Step 4: Simplify right side
    2,230.07x = 4,278,389.01
  5. Step 5: Solve for x
    x = 4,278,389.01/2,230.07
  6. Step 6: Final answer
    x = 1,918.50

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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.