Home / 1,036.30-1,430.10-564.20

Finding the Fourth Proportional to 1,036.30, 1,430.10 and 564.20

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Solution

The fourth proportional to 1,036.30, 1,430.10 and 564.20 is: 778.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.30 : 1,430.10 = 564.20 : x
  2. Step 2: Convert to fraction form
    1,036.30/1,430.10 = 564.20/x
  3. Step 3: Cross multiply
    1,036.30x = 1,430.10 × 564.20
  4. Step 4: Simplify right side
    1,036.30x = 806,859.60
  5. Step 5: Solve for x
    x = 806,859.60/1,036.30
  6. Step 6: Final answer
    x = 778.60

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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.