Home / 2,485.07-3,430.13-1,423.43

Finding the Fourth Proportional to 2,485.07, 3,430.13 and 1,423.43

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Solution

The fourth proportional to 2,485.07, 3,430.13 and 1,423.43 is: 1,964.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.07 : 3,430.13 = 1,423.43 : x
  2. Step 2: Convert to fraction form
    2,485.07/3,430.13 = 1,423.43/x
  3. Step 3: Cross multiply
    2,485.07x = 3,430.13 × 1,423.43
  4. Step 4: Simplify right side
    2,485.07x = 4,882,549.95
  5. Step 5: Solve for x
    x = 4,882,549.95/2,485.07
  6. Step 6: Final answer
    x = 1,964.75

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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.