Home / 5,417.81-8,126.72-1,313.81

Finding the Fourth Proportional to 5,417.81, 8,126.72 and 1,313.81

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Solution

The fourth proportional to 5,417.81, 8,126.72 and 1,313.81 is: 1,970.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.81 : 8,126.72 = 1,313.81 : x
  2. Step 2: Convert to fraction form
    5,417.81/8,126.72 = 1,313.81/x
  3. Step 3: Cross multiply
    5,417.81x = 8,126.72 × 1,313.81
  4. Step 4: Simplify right side
    5,417.81x = 10,676,966.00
  5. Step 5: Solve for x
    x = 10,676,966.00/5,417.81
  6. Step 6: Final answer
    x = 1,970.72

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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.