Home / 1,720.18-2,374.16-974.18

Finding the Fourth Proportional to 1,720.18, 2,374.16 and 974.18

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Solution

The fourth proportional to 1,720.18, 2,374.16 and 974.18 is: 1,344.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.18 : 2,374.16 = 974.18 : x
  2. Step 2: Convert to fraction form
    1,720.18/2,374.16 = 974.18/x
  3. Step 3: Cross multiply
    1,720.18x = 2,374.16 × 974.18
  4. Step 4: Simplify right side
    1,720.18x = 2,312,859.19
  5. Step 5: Solve for x
    x = 2,312,859.19/1,720.18
  6. Step 6: Final answer
    x = 1,344.54

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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.