Home / 1,030.15-1,421.70-588.19

Finding the Fourth Proportional to 1,030.15, 1,421.70 and 588.19

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Solution

The fourth proportional to 1,030.15, 1,421.70 and 588.19 is: 811.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.15 : 1,421.70 = 588.19 : x
  2. Step 2: Convert to fraction form
    1,030.15/1,421.70 = 588.19/x
  3. Step 3: Cross multiply
    1,030.15x = 1,421.70 × 588.19
  4. Step 4: Simplify right side
    1,030.15x = 836,229.72
  5. Step 5: Solve for x
    x = 836,229.72/1,030.15
  6. Step 6: Final answer
    x = 811.76

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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.