Home / 4,312.70-5,946.86-3,315.78

Finding the Fourth Proportional to 4,312.70, 5,946.86 and 3,315.78

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Solution

The fourth proportional to 4,312.70, 5,946.86 and 3,315.78 is: 4,572.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,312.70 : 5,946.86 = 3,315.78 : x
  2. Step 2: Convert to fraction form
    4,312.70/5,946.86 = 3,315.78/x
  3. Step 3: Cross multiply
    4,312.70x = 5,946.86 × 3,315.78
  4. Step 4: Simplify right side
    4,312.70x = 19,718,479.45
  5. Step 5: Solve for x
    x = 19,718,479.45/4,312.70
  6. Step 6: Final answer
    x = 4,572.19

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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.