Home / 2,099.50-2,897.54-1,313.40

Finding the Fourth Proportional to 2,099.50, 2,897.54 and 1,313.40

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Solution

The fourth proportional to 2,099.50, 2,897.54 and 1,313.40 is: 1,812.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.50 : 2,897.54 = 1,313.40 : x
  2. Step 2: Convert to fraction form
    2,099.50/2,897.54 = 1,313.40/x
  3. Step 3: Cross multiply
    2,099.50x = 2,897.54 × 1,313.40
  4. Step 4: Simplify right side
    2,099.50x = 3,805,629.04
  5. Step 5: Solve for x
    x = 3,805,629.04/2,099.50
  6. Step 6: Final answer
    x = 1,812.64

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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.