Home / 1,030.21-1,421.80-588.18

Finding the Fourth Proportional to 1,030.21, 1,421.80 and 588.18

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Solution

The fourth proportional to 1,030.21, 1,421.80 and 588.18 is: 811.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.21 : 1,421.80 = 588.18 : x
  2. Step 2: Convert to fraction form
    1,030.21/1,421.80 = 588.18/x
  3. Step 3: Cross multiply
    1,030.21x = 1,421.80 × 588.18
  4. Step 4: Simplify right side
    1,030.21x = 836,271.38
  5. Step 5: Solve for x
    x = 836,271.38/1,030.21
  6. Step 6: Final answer
    x = 811.75

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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.