Home / 1,541.40-2,313.45-1,322.70

Finding the Fourth Proportional to 1,541.40, 2,313.45 and 1,322.70

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Solution

The fourth proportional to 1,541.40, 2,313.45 and 1,322.70 is: 1,985.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.40 : 2,313.45 = 1,322.70 : x
  2. Step 2: Convert to fraction form
    1,541.40/2,313.45 = 1,322.70/x
  3. Step 3: Cross multiply
    1,541.40x = 2,313.45 × 1,322.70
  4. Step 4: Simplify right side
    1,541.40x = 3,060,000.32
  5. Step 5: Solve for x
    x = 3,060,000.32/1,541.40
  6. Step 6: Final answer
    x = 1,985.21

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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.