Home / 1,970.25-2,718.84-1,130.34

Finding the Fourth Proportional to 1,970.25, 2,718.84 and 1,130.34

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Solution

The fourth proportional to 1,970.25, 2,718.84 and 1,130.34 is: 1,559.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.25 : 2,718.84 = 1,130.34 : x
  2. Step 2: Convert to fraction form
    1,970.25/2,718.84 = 1,130.34/x
  3. Step 3: Cross multiply
    1,970.25x = 2,718.84 × 1,130.34
  4. Step 4: Simplify right side
    1,970.25x = 3,073,213.61
  5. Step 5: Solve for x
    x = 3,073,213.61/1,970.25
  6. Step 6: Final answer
    x = 1,559.81

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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.