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Finding the Fourth Proportional to 1,970.00, 2,718.38 and 1,130.68

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Solution

The fourth proportional to 1,970.00, 2,718.38 and 1,130.68 is: 1,560.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.00 : 2,718.38 = 1,130.68 : x
  2. Step 2: Convert to fraction form
    1,970.00/2,718.38 = 1,130.68/x
  3. Step 3: Cross multiply
    1,970.00x = 2,718.38 × 1,130.68
  4. Step 4: Simplify right side
    1,970.00x = 3,073,605.45
  5. Step 5: Solve for x
    x = 3,073,605.45/1,970.00
  6. Step 6: Final answer
    x = 1,560.21

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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.