Home / 1,254.40-1,730.56-904.32

Finding the Fourth Proportional to 1,254.40, 1,730.56 and 904.32

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Solution

The fourth proportional to 1,254.40, 1,730.56 and 904.32 is: 1,247.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.40 : 1,730.56 = 904.32 : x
  2. Step 2: Convert to fraction form
    1,254.40/1,730.56 = 904.32/x
  3. Step 3: Cross multiply
    1,254.40x = 1,730.56 × 904.32
  4. Step 4: Simplify right side
    1,254.40x = 1,564,980.02
  5. Step 5: Solve for x
    x = 1,564,980.02/1,254.40
  6. Step 6: Final answer
    x = 1,247.59

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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.