Home / 1,571.02-2,166.81-1,011.55

Finding the Fourth Proportional to 1,571.02, 2,166.81 and 1,011.55

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Solution

The fourth proportional to 1,571.02, 2,166.81 and 1,011.55 is: 1,395.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.02 : 2,166.81 = 1,011.55 : x
  2. Step 2: Convert to fraction form
    1,571.02/2,166.81 = 1,011.55/x
  3. Step 3: Cross multiply
    1,571.02x = 2,166.81 × 1,011.55
  4. Step 4: Simplify right side
    1,571.02x = 2,191,836.66
  5. Step 5: Solve for x
    x = 2,191,836.66/1,571.02
  6. Step 6: Final answer
    x = 1,395.17

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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.