Home / 2,670.40-3,685.30-1,491.45

Finding the Fourth Proportional to 2,670.40, 3,685.30 and 1,491.45

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Solution

The fourth proportional to 2,670.40, 3,685.30 and 1,491.45 is: 2,058.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.40 : 3,685.30 = 1,491.45 : x
  2. Step 2: Convert to fraction form
    2,670.40/3,685.30 = 1,491.45/x
  3. Step 3: Cross multiply
    2,670.40x = 3,685.30 × 1,491.45
  4. Step 4: Simplify right side
    2,670.40x = 5,496,423.14
  5. Step 5: Solve for x
    x = 5,496,423.14/2,670.40
  6. Step 6: Final answer
    x = 2,058.28

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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.