Home / 1,319.02-1,820.14-1,178.69

Finding the Fourth Proportional to 1,319.02, 1,820.14 and 1,178.69

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Solution

The fourth proportional to 1,319.02, 1,820.14 and 1,178.69 is: 1,626.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.02 : 1,820.14 = 1,178.69 : x
  2. Step 2: Convert to fraction form
    1,319.02/1,820.14 = 1,178.69/x
  3. Step 3: Cross multiply
    1,319.02x = 1,820.14 × 1,178.69
  4. Step 4: Simplify right side
    1,319.02x = 2,145,368.77
  5. Step 5: Solve for x
    x = 2,145,368.77/1,319.02
  6. Step 6: Final answer
    x = 1,626.49

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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.