Home / 2,685.02-3,705.51-1,490.07

Finding the Fourth Proportional to 2,685.02, 3,705.51 and 1,490.07

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Solution

The fourth proportional to 2,685.02, 3,705.51 and 1,490.07 is: 2,056.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.02 : 3,705.51 = 1,490.07 : x
  2. Step 2: Convert to fraction form
    2,685.02/3,705.51 = 1,490.07/x
  3. Step 3: Cross multiply
    2,685.02x = 3,705.51 × 1,490.07
  4. Step 4: Simplify right side
    2,685.02x = 5,521,469.29
  5. Step 5: Solve for x
    x = 5,521,469.29/2,685.02
  6. Step 6: Final answer
    x = 2,056.40

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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.