Home / 2,860.04-4,290.26-912.40

Finding the Fourth Proportional to 2,860.04, 4,290.26 and 912.40

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Solution

The fourth proportional to 2,860.04, 4,290.26 and 912.40 is: 1,368.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.04 : 4,290.26 = 912.40 : x
  2. Step 2: Convert to fraction form
    2,860.04/4,290.26 = 912.40/x
  3. Step 3: Cross multiply
    2,860.04x = 4,290.26 × 912.40
  4. Step 4: Simplify right side
    2,860.04x = 3,914,433.22
  5. Step 5: Solve for x
    x = 3,914,433.22/2,860.04
  6. Step 6: Final answer
    x = 1,368.66

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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.