Home / 1,865.46-2,574.36-1,079.70

Finding the Fourth Proportional to 1,865.46, 2,574.36 and 1,079.70

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Solution

The fourth proportional to 1,865.46, 2,574.36 and 1,079.70 is: 1,490.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.46 : 2,574.36 = 1,079.70 : x
  2. Step 2: Convert to fraction form
    1,865.46/2,574.36 = 1,079.70/x
  3. Step 3: Cross multiply
    1,865.46x = 2,574.36 × 1,079.70
  4. Step 4: Simplify right side
    1,865.46x = 2,779,536.49
  5. Step 5: Solve for x
    x = 2,779,536.49/1,865.46
  6. Step 6: Final answer
    x = 1,490.00

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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.