Home / 4,085.84-6,128.76-1,312.74

Finding the Fourth Proportional to 4,085.84, 6,128.76 and 1,312.74

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Solution

The fourth proportional to 4,085.84, 6,128.76 and 1,312.74 is: 1,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.84 : 6,128.76 = 1,312.74 : x
  2. Step 2: Convert to fraction form
    4,085.84/6,128.76 = 1,312.74/x
  3. Step 3: Cross multiply
    4,085.84x = 6,128.76 × 1,312.74
  4. Step 4: Simplify right side
    4,085.84x = 8,045,473.33
  5. Step 5: Solve for x
    x = 8,045,473.33/4,085.84
  6. Step 6: Final answer
    x = 1,969.11

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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.