Home / 3,315.40-4,973.10-1,930.30

Finding the Fourth Proportional to 3,315.40, 4,973.10 and 1,930.30

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Solution

The fourth proportional to 3,315.40, 4,973.10 and 1,930.30 is: 2,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.40 : 4,973.10 = 1,930.30 : x
  2. Step 2: Convert to fraction form
    3,315.40/4,973.10 = 1,930.30/x
  3. Step 3: Cross multiply
    3,315.40x = 4,973.10 × 1,930.30
  4. Step 4: Simplify right side
    3,315.40x = 9,599,574.93
  5. Step 5: Solve for x
    x = 9,599,574.93/3,315.40
  6. Step 6: Final answer
    x = 2,895.45

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Double scale
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Similar ratio
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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.