Home / 3,315.84-4,574.08-1,988.68

Finding the Fourth Proportional to 3,315.84, 4,574.08 and 1,988.68

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Solution

The fourth proportional to 3,315.84, 4,574.08 and 1,988.68 is: 2,743.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.84 : 4,574.08 = 1,988.68 : x
  2. Step 2: Convert to fraction form
    3,315.84/4,574.08 = 1,988.68/x
  3. Step 3: Cross multiply
    3,315.84x = 4,574.08 × 1,988.68
  4. Step 4: Simplify right side
    3,315.84x = 9,096,381.41
  5. Step 5: Solve for x
    x = 9,096,381.41/3,315.84
  6. Step 6: Final answer
    x = 2,743.31

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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.