Home / 3,117.81-4,674.61-1,242.45

Finding the Fourth Proportional to 3,117.81, 4,674.61 and 1,242.45

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Solution

The fourth proportional to 3,117.81, 4,674.61 and 1,242.45 is: 1,862.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.81 : 4,674.61 = 1,242.45 : x
  2. Step 2: Convert to fraction form
    3,117.81/4,674.61 = 1,242.45/x
  3. Step 3: Cross multiply
    3,117.81x = 4,674.61 × 1,242.45
  4. Step 4: Simplify right side
    3,117.81x = 5,807,969.19
  5. Step 5: Solve for x
    x = 5,807,969.19/3,117.81
  6. Step 6: Final answer
    x = 1,862.84

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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.