Home / 2,315.87-3,195-1,430.13

Finding the Fourth Proportional to 2,315.87, 3,195 and 1,430.13

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Solution

The fourth proportional to 2,315.87, 3,195 and 1,430.13 is: 1,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.87 : 3,195 = 1,430.13 : x
  2. Step 2: Convert to fraction form
    2,315.87/3,195 = 1,430.13/x
  3. Step 3: Cross multiply
    2,315.87x = 3,195 × 1,430.13
  4. Step 4: Simplify right side
    2,315.87x = 4,569,265.35
  5. Step 5: Solve for x
    x = 4,569,265.35/2,315.87
  6. Step 6: Final answer
    x = 1,973.03

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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.