Home / 7,085.40-10,628.10-3,386.76

Finding the Fourth Proportional to 7,085.40, 10,628.10 and 3,386.76

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Solution

The fourth proportional to 7,085.40, 10,628.10 and 3,386.76 is: 5,080.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.40 : 10,628.10 = 3,386.76 : x
  2. Step 2: Convert to fraction form
    7,085.40/10,628.10 = 3,386.76/x
  3. Step 3: Cross multiply
    7,085.40x = 10,628.10 × 3,386.76
  4. Step 4: Simplify right side
    7,085.40x = 35,994,823.96
  5. Step 5: Solve for x
    x = 35,994,823.96/7,085.40
  6. Step 6: Final answer
    x = 5,080.14

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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.