Home / 1,574.02-2,176.86-1,377.20

Finding the Fourth Proportional to 1,574.02, 2,176.86 and 1,377.20

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Solution

The fourth proportional to 1,574.02, 2,176.86 and 1,377.20 is: 1,904.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.02 : 2,176.86 = 1,377.20 : x
  2. Step 2: Convert to fraction form
    1,574.02/2,176.86 = 1,377.20/x
  3. Step 3: Cross multiply
    1,574.02x = 2,176.86 × 1,377.20
  4. Step 4: Simplify right side
    1,574.02x = 2,997,971.59
  5. Step 5: Solve for x
    x = 2,997,971.59/1,574.02
  6. Step 6: Final answer
    x = 1,904.66

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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.