Home / 1,923.40-2,885.10-1,907.20

Finding the Fourth Proportional to 1,923.40, 2,885.10 and 1,907.20

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Solution

The fourth proportional to 1,923.40, 2,885.10 and 1,907.20 is: 2,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,923.40 : 2,885.10 = 1,907.20 : x
  2. Step 2: Convert to fraction form
    1,923.40/2,885.10 = 1,907.20/x
  3. Step 3: Cross multiply
    1,923.40x = 2,885.10 × 1,907.20
  4. Step 4: Simplify right side
    1,923.40x = 5,502,462.72
  5. Step 5: Solve for x
    x = 5,502,462.72/1,923.40
  6. Step 6: Final answer
    x = 2,860.80

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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.