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Finding the Fourth Proportional to 2,210.88, 3,316.32 and 912.48

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Solution

The fourth proportional to 2,210.88, 3,316.32 and 912.48 is: 1,368.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.88 : 3,316.32 = 912.48 : x
  2. Step 2: Convert to fraction form
    2,210.88/3,316.32 = 912.48/x
  3. Step 3: Cross multiply
    2,210.88x = 3,316.32 × 912.48
  4. Step 4: Simplify right side
    2,210.88x = 3,026,075.67
  5. Step 5: Solve for x
    x = 3,026,075.67/2,210.88
  6. Step 6: Final answer
    x = 1,368.72

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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.