Home / 2,313.60-3,461.86-1,389.72

Finding the Fourth Proportional to 2,313.60, 3,461.86 and 1,389.72

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Solution

The fourth proportional to 2,313.60, 3,461.86 and 1,389.72 is: 2,079.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.60 : 3,461.86 = 1,389.72 : x
  2. Step 2: Convert to fraction form
    2,313.60/3,461.86 = 1,389.72/x
  3. Step 3: Cross multiply
    2,313.60x = 3,461.86 × 1,389.72
  4. Step 4: Simplify right side
    2,313.60x = 4,811,016.08
  5. Step 5: Solve for x
    x = 4,811,016.08/2,313.60
  6. Step 6: Final answer
    x = 2,079.45

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1.5x scale

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.