Home / 2,485.62-3,430.13-1,423.57

Finding the Fourth Proportional to 2,485.62, 3,430.13 and 1,423.57

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Solution

The fourth proportional to 2,485.62, 3,430.13 and 1,423.57 is: 1,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.62 : 3,430.13 = 1,423.57 : x
  2. Step 2: Convert to fraction form
    2,485.62/3,430.13 = 1,423.57/x
  3. Step 3: Cross multiply
    2,485.62x = 3,430.13 × 1,423.57
  4. Step 4: Simplify right side
    2,485.62x = 4,883,030.16
  5. Step 5: Solve for x
    x = 4,883,030.16/2,485.62
  6. Step 6: Final answer
    x = 1,964.51

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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.