Home / 1,705.65-2,353.62-1,116.78

Finding the Fourth Proportional to 1,705.65, 2,353.62 and 1,116.78

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Solution

The fourth proportional to 1,705.65, 2,353.62 and 1,116.78 is: 1,541.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.65 : 2,353.62 = 1,116.78 : x
  2. Step 2: Convert to fraction form
    1,705.65/2,353.62 = 1,116.78/x
  3. Step 3: Cross multiply
    1,705.65x = 2,353.62 × 1,116.78
  4. Step 4: Simplify right side
    1,705.65x = 2,628,475.74
  5. Step 5: Solve for x
    x = 2,628,475.74/1,705.65
  6. Step 6: Final answer
    x = 1,541.04

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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.