Home / 2,210.40-3,315.60-977.18

Finding the Fourth Proportional to 2,210.40, 3,315.60 and 977.18

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Solution

The fourth proportional to 2,210.40, 3,315.60 and 977.18 is: 1,465.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.40 : 3,315.60 = 977.18 : x
  2. Step 2: Convert to fraction form
    2,210.40/3,315.60 = 977.18/x
  3. Step 3: Cross multiply
    2,210.40x = 3,315.60 × 977.18
  4. Step 4: Simplify right side
    2,210.40x = 3,239,921.43
  5. Step 5: Solve for x
    x = 3,239,921.43/2,210.40
  6. Step 6: Final answer
    x = 1,465.76

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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.