Home / 1,377.89-2,055.65-1,264.99

Finding the Fourth Proportional to 1,377.89, 2,055.65 and 1,264.99

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Solution

The fourth proportional to 1,377.89, 2,055.65 and 1,264.99 is: 1,887.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.89 : 2,055.65 = 1,264.99 : x
  2. Step 2: Convert to fraction form
    1,377.89/2,055.65 = 1,264.99/x
  3. Step 3: Cross multiply
    1,377.89x = 2,055.65 × 1,264.99
  4. Step 4: Simplify right side
    1,377.89x = 2,600,376.69
  5. Step 5: Solve for x
    x = 2,600,376.69/1,377.89
  6. Step 6: Final answer
    x = 1,887.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.